Retired Green Beret David Harris rates portrayals of explosions in movies and TV shows.br He looks at how RPGs are employed in "Black Hawk Down," starring Josh Hartnett, Ewan McGregor, and Eric Bana; "Tropic Thunder," starring Ben Stiller, Robert Downey Jr., and Jack Black; and "White House Down," starring Jamie Foxx, Channing Tatum, and Maggie Gyllenhaal. He discusses the different ways to launch grenades in "Extraction II," starring Chris Hemsworth and Idris Elba; and "RRR," starring Ram Charan and N.T. Rama Rao Jr. He explains how landmines are activated in "Commando," starring Arnold Schwarzenegger; "Nobody," starring Bob Odenkirk, Christopher Lloyd, and RZA; and "Da 5 Bloods," starring Chadwick Boseman, Delroy Lindo, and Isiah Whitlock Jr. He answers whether you can stop a grenade by jumping on one in "Act of Valor." He talks about the effects of stun grenades in "The Town," starring Ben Affleck, Jeremy Renner, and Jon Hamm. Finally, he breaks down how airstrikes work in "We Were Soldiers," starring Mel Gibson, Sam Elliot, and Greg Kinnear.br David Harris served in the US Army for 20 years, including as a Special Forces weapons sergeant. He is the CEO of Harris Strategic Solutions, which provides tactical training to military and law enforcement members.