It looks like you're referencing the film Parmanu: The Story of Pokhran (2018)
If you enjoy political thrillers or films centered on military history, Parmanu offers a compelling watch. It serves as a tribute to the determination and ingenuity of the Indian scientific community. -Movies4u.Bid-.Parmanu.2018.1080p.NF.WEB.DL.x26...
Parmanu: The Story of Pokhran is an Indian historical action-thriller directed by Abhishek Sharma . It dramatizes the 1998 nuclear tests conducted by India at the Pokhran test site, a mission carried out in extreme secrecy to avoid detection by American Lacrosse satellites and international spies. It looks like you're referencing the film Parmanu: