A road leads to the entrance gate of the Nevada National Security Site, where vehicles stop for a security checkpoint.

MSTS Contract Modifications

A road leads to the entrance gate of the Nevada National Security Site, where vehicles stop for a security checkpoint.

Home / About the NNSS / MSTS Contract Modifications

Mission Support and Test Services (MSTS) is the management and operating contractor for the NNSS on behalf of the NNSA Nevada Field Office. The contract valued at approximately $5,000,000,000 was awarded on May 12, 2017. The contract period of performance is December 1, 2017, through November 30, 2027.

Name:Effective Date:Description:
DE-NA0003624_Mod_02165/14/2024Contract Modification
DE-NA0003624_Mod_02154/29/2024Obligation of Funds
DE-NA0003624_Mod_02144/29/2024Obligation of Funds
DE-NA0003624_Mod_02133/28/2024Obligation of Funds
DE-NA0003624_Mod_02123/28/2024Obligation of Funds
DE-NA0003624_Mod_02112/28/2024Obligation of Funds
DE-NA0003624_Mod_02102/28/2024Obligation of Funds
DE-NA0003624_Mod_02091/29/2024Obligation of Funds
DE-NA0003624_Mod_02081/29/2024Obligation of Funds
DE-NA0003624_Mod_02071/18/2024Obligation of Funds
DE-NA0003624_Mod_02061/17/2024Obligation of Funds
DE-NA0003624_Mod_020512/27/2023Obligation of Funds
DE-NA0003624_Mod_020412/27/2023Obligation of Funds
DE-NA0003624_Mod_020211/16/2023Obligation of Funds
DE-NA0003624_Mod_020111/15/2023Obligation of Funds
DE-NA0003624_Mod_020012/08/2023Contract Modification
DE-NA0003624_Mod_019910/27/2023Obligation of Funds
DE-NA0003624_MOD_01979/27/2023Obligation of Funds
DE-NA0003624_MOD_01969/27/2023Obligation of Funds
DE-NA0003624_Mod_019510/26/2023Contract Modification
DE-NA0003624_MOD_01949/11/2023Contract Modification
DE-NA0003624_MOD_01928/28/2023Obligation of Funds
DE-NA0003624_MOD_01918/28/2023Obligation of Funds
DE-NA0003624_MOD_01908/15/2023Contract Modification
DE-NA0003624_MOD_01897/27/2023Obligation of Funds
DE-NA0003624_MOD_01887/27/2023Obligation of Funds
DE-NA0003624_MOD_01866/28/2023Obligation of Funds
DE-NA0003624_MOD_01856/28/2023Obligation of Funds
DE-NA0003624_MOD_01847/12/2023Contract Modification
DE-NA0003624_MOD_01835/31/2023Obligation of Funds
DE-NA0003624_MOD_01825/30/2023Obligation of Funds
DE-NA0003624_MOD_018111/21/2023Contract Modification
DE-NA0003624_MOD_01805/15/2023Contract Modification
DE-NA0003624_MOD_01794/27/2023Obligation of Funds
DE-NA0003624_MOD_01784/27/2023Obligation of Funds
DE-NA0003624_MOD_01773/30/2023Obligation of Funds
DE-NA0003624_MOD_01763/30/2023Obligation of Funds
DE-NA0003624_MOD_01753/7/2023Contract Modification
DE-NA0003624_MOD_01742/27/2023Obligation of Funds
DE-NA0003624_MOD_01732/27/2023Obligation of Funds
DE-NA0003624_MOD_01721/30/2023Obligation of Funds
DE-NA0003624_MOD_01711/30/2023Obligation of Funds
DE-NA0003624_MOD_017012/08/2023Reserve Modification
with No Action
DE-NA0003624_MOD_01691/10/2023Obligation of Funds
DE-NA0003624_MOD_01681/4/2023Contract Modification
DE-NA0003624_MOD_016712/21/2022Contract Modification
DE-NA0003624_MOD_016612/22/2022Obligation of Funds
DE-NA0003624_MOD_016512/22/2022Obligation of Funds
DE-NA0003624_MOD_016412/21/2022Contract Modification
DE-NA0003624_MOD_016311/29/2022Obligation of Funds
DE-NA0003624_MOD_016211/29/2022Obligation of Funds
DE-NA0003624_MOD_016112/2/2022Contract Modification
DE-NA0003624_MOD_01604/20/2023Contract Modification
DE-NA0003624_MOD_015911/15/2022Contract Modification
DE-NA0003624_MOD_015810/27/2022Obligation of Funds
DE-NA0003624_MOD_01579/29/2022Obligation of Funds
DE-NA0003624_MOD_01569/29/2022Obligation of Funds
DE-NA0003624_MOD_01559/22/2022Contract Modification
DE-NA0003624_MOD_01548/31/2022Obligation of Funds
DE-NA0003624_MOD_01538/30/2022Obligation of Funds
DE-NA0003624_MOD_01528/17/2022Contract Modification
DE-NA0003624_MOD_01518/31/2022Contract Modification
DE-NA0003624_MOD_01507/29/2022Obligation of Funds
DE-NA0003624_MOD_01497/29/2022Obligation of Funds
DE-NA0003624_MOD_01486/29/2022Obligation of Funds
DE-NA0003624_MOD_01476/28/2022Obligation of Funds
DE-NA0003624_MOD_01465/27/2022Obligation of Funds
DE-NA0003624_MOD_01455/26/2022Obligation of Funds
DE-NA0003624_MOD_01446/16/2022Contract Modification
DE-NA0003624_MOD_01436/7/2022Contract Modification
DE-NA0003624_MOD_014210/4/2022Contract Modification
DE-NA0003624_MOD_01414/28/2022Obligation of Funds
DE-NA0003624_MOD_01405/6/2022Contract Modification
DE-NA0003624_MOD_01394/28/2022Obligation of Funds
DE-NA0003624_MOD_01373/30/2022Obligation of Funds
DE-NA0003624_MOD_01363/28/2022Contract Modification
DE-NA0003624_MOD_01353/29/2022Obligation of Funds
DE-NA0003624_MOD_01343/11/2022Obligation of Funds
DE-NA0003624_MOD_01333/11/2022Obligation of Funds
DE-NA0003624_MOD_013212/08/2023Reserve Modification
with No Action
DE-NA0003624_MOD_01302/18/2022Obligation of Funds
DE-NA0003624_MOD_01292/18/2022Obligation of Funds
DE-NA0003624_MOD_01281/27/2022Obligation of Funds
DE-NA0003624_MOD_01272/2/2022Contract Modification
DE-NA0003624_MOD_01261/15/2022Obligation of Funds
DE-NA0003624_MOD_01259/8/2022Contract Modification
DE-NA0003624_MOD_012412/28/2021Obligation of Funds
DE-NA0003624_MOD_012312/21/2021Contract Modification
DE-NA0003624_MOD_012211/26/2021Obligation of Funds
DE-NA0003624_MOD_01211/20/2022Contract Modification
DE-NA0003624_MOD_012012/23/2021Contract Modification
DE-NA0003624_MOD_011912/08/2023Reserve Modification
with No Action
DE-NA0003624_MOD_011810/28/2021Obligation of Funds
DE-NA0003624_MOD_011710/29/2021Contract Modification
DE-NA0003624_MOD_011610/7/2021Contract Modification
DE-NA0003624_MOD_01159/29/2021Obligation of Funds
DE-NA0003624_MOD_01149/30/2021Contract Modification
DE-NA0003624_MOD_01138/31/2021Obligation of Funds
DE-NA0003624_MOD_01128/30/2021Contract Modification
DE-NA0003624_MOD_01117/30/2021Obligation of Funds
DE-NA0003624_MOD_01107/14/2021Contract Modification
DE-NA0003624_MOD_01099/16/2021Contract Modification
DE-NA0003624_MOD_01087/21/2021Contract Modification
DE-NA0003624_MOD_01076/29/2021Obligation of Funds
DE-NA0003624_MOD_01066/30/2021Contract Modification
DE-NA0003624_MOD_01055/27/2021Obligation of Funds
DE-NA0003624_MOD_01046/4/2021Contract Modification
DE-NA0003624_MOD_01034/30/2021Obligation of Funds
DE-NA0003624_MOD_01024/14/2021Contract Modification
DE-NA0003624_MOD_01013/30/2021Obligation of Funds
DE-NA0003624_MOD_01003/16/2021Contract Modification
DE-NA0003624_MOD_00994/8/2021Contract Modification
DE-NA0003624_MOD_00982/25/2021Obligation of Funds
DE-NA0003624_MOD_00971/28/2021Obligation of Funds
DE-NA0003624_MOD_009612/30/2020Contract Modification
DE-NA0003624_MOD_009512/23/2020Obligation of Funds
DE-NA0003624_MOD_009412/22/2020Contract Modification
DE-NA0003624_MOD_009312/18/2020Obligation of Funds
DE-NA0003624_MOD_009212/17/2020Contract Modification
DE-NA0003624_MOD_009112/14/2020Contract Modification
DE-NA0003624_MOD_009011/25/2020Obligation of Funds
DE-NA0003624_MOD_00893/30/2021Contract Modification
DE-NA0003624_MOD_008811/4/2020Contract Modification
DE-NA0003624_MOD_008710/30/2020Obligation of Funds
DE-NA0003624_MOD_008610/7/2020Contract Modification
DE-NA0003624_MOD_008510/13/2020Contract Modification
DE-NA0003624_MOD_00849/30/2020Contract Modification
DE-NA0003624_MOD_00839/29/2020Obligation of Funds
DE-NA0003624_MOD_00829/3/2020Contract Modification
DE-NA0003624_MOD_00818/31/2020Obligation of Funds
DE-NA0003624_MOD_00808/20/2020Contract Modification
DE-NA0003624_MOD_00797/30/2020Obligation of Funds
DE-NA0003624_MOD_00786/26/2020Obligation of Funds
DE-NA0003624_MOD_00774/14/2021Contract Modification
DE-NA0003624_MOD_00767/30/2020Contract Modification
DE-NA0003624_MOD_00757/29/2020Contract Modification
DE-NA0003624_MOD_00745/28/2020Obligation of Funds
DE-NA0003624_MOD_00734/30/2020Obligation of Funds
DE-NA0003624_MOD_00724/16/2020Contract Modification
DE-NA0003624_MOD_00714/13/2020Contract Modification
DE-NA0003624_MOD_00703/31/2020Obligation of Funds
DE-NA0003624_MOD_00694/1/2020Contract Modification
DE-NA0003624_MOD_00682/26/2020Obligation of Funds
DE-NA0003624_MOD_00671/30/2020
Obligation of Funds
DE-NA0003624_MOD_00662/4/2020Contract Modification
DE-NA0003624_MOD_006512/20/2019Obligation of Funds
DE-NA0003624_MOD_00641/16/2020Contract Modification
DE-NA0003624_MOD_006311/25/2019Obligation of Funds
DE-NA0003624_MOD_00622/10/2020Contract Modification
DE-NA0003624_MOD_006110/29/2019Obligation of Funds
DE-NA0003624_MOD_00602/10/2020Contract Modification
DE-NA0003624_MOD_005910/15/2019Contract Modification
DE-NA0003624_MOD_00589/26/2019Obligation of Funds
DE-NA0003624_MOD_00578/28/2019Obligation of Funds
DE-NA0003624_MOD_00568/29/2019Contract Modification
DE-NA0003624_MOD_00558/1/2019Obligation of Funds
DE-NA0003624_MOD_00547/30/2019Obligation of Funds
DE-NA0003624_MOD_00536/27/2019Obligation of Funds
DE-NA0003624_MOD_00527/2/2019Contract Modification
DE-NA0003624_MOD_00515/28/2019Obligation of Funds
DE-NA0003624_MOD_00505/16/2019Contract Modification
DE-NA0003624_MOD_00494/29/2019Obligation of Funds
DE-NA0003624_MOD_00484/19/2019Obligation of Funds
DE-NA0003624_MOD_00473/28/2019Obligation of Funds
DE-NA0003624_MOD_00462/27/2019Obligation of Funds
DE-NA0003624_MOD_00451/31/2019Obligation of Funds
DE-NA0003624_MOD_00445/10/2019Contract Modification
DE-NA0003624_MOD_00431/30/2019Obligation of Funds
DE-NA0003624_MOD_00421/14/2019Contract Modification
DE-NA0003624_MOD_004112/27/2018Obligation of Funds
DE-NA0003624_MOD_004012/27/2018Obligation of Funds
DE-NA0003624_MOD_003911/28/2018Obligation of Funds
DE-NA0003624_MOD_003811/28/2018Obligation of Funds
DE-NA0003624_MOD_003711/29/2018Contract Modification
DE-NA0003624_MOD_003611/7/2018Contract Modification
DE-NA0003624_MOD_003510/30/2018Obligation of Funds
DE-NA0003624_MOD_003410/29/2018Obligation of Funds
DE-NA0003624_MOD_003311/5/2018Contract Modification
DE-NA0003624_MOD_00329/27/2018Obligation of Funds
DE-NA0003624_MOD_00319/27/2018Obligation of Funds
DE-NA0003624_MOD_00309/26/2018Contract Modification
DE-NA0003624_MOD_00298/29/2018Obligation of Funds
DE-NA0003624_MOD_00288/27/2018Obligation of Funds
DE-NA0003624_MOD_00278/20/2018Contract Modification
DE-NA0003624_MOD_00267/31/2018Obligation of Funds
DE-NA0003624_MOD_00257/30/2018Obligation of Funds
DE-NA0003624_MOD_00246/28/2018Obligation of Funds
DE-NA0003624_MOD_00236/27/2018Obligation of Funds
DE-NA0003624_MOD_00226/18/2018Contract Modification
DE-NA0003624_MOD_00215/30/2018Obligation of Funds
DE-NA0003624_MOD_00205/30/2018Obligation of Funds
DE-NA0003624_MOD_00184/27/2018Obligation of Funds
DE-NA0003624_MOD_00174/27/2018Obligation of Funds
DE-NA0003624_MOD_00163/29/2018Obligation of Funds
DE-NA0003624_MOD_00153/26/2018Obligation of Funds
DE-NA0003624_MOD_00143/14/2018Contract Modification
DE-NA0003624_MOD_00132/28/2018Obligation of Funds
DE-NA0003624_MOD_00122/27/2018Obligation of Funds
DE-NA0003624_MOD_00111/31/2018Obligation of Funds
DE-NA0003624_MOD_00101/30/2018Obligation of Funds
DE-NA0003624_MOD_00094/3/2018Contract Modification
DE-NA0003624_MOD_000811/30/2017Contract Modification
DE-NA0003624_MOD_000711/15/2017Contract Modification
DE-NA0003624_MOD_000612/27/2017Obligation of Funds
DE-NA0003624_MOD_000512/26/2017Obligation of Funds
DE-NA0003624_MOD_00049/29/2017Limitation of Funds
DE-NA0003624_MOD_00039/28/2017Limitation of Funds
DE-NA0003624_MOD_00028/31/2017Limitation of Funds
DE-NA0003624_MOD_00016/7/2017Contract Modification

MSTS Contract Information