“12 Absurdly Expensive Guns Sure to Make You Drool.” Wide Open Spaces, 30 Aug. 2017, www.wideopenspaces.com/12-ridiculously-expensive-guns-youll-never-afford/.
“Weapons Engineer | Inside Jobs.” Yellow_triangle, www.insidejobs.com/careers/weapons-engineer.
Burman, Nat. “The 10 Most Expensive Military Weapons Ever.” Money Inc, 29 Aug. 2016, moneyinc.com/most-expensive-military-weapons-ever/.
Baron, Kevin. “Defense One.” Defense One, 2 Jan. 2018, www.defenseone.com/.