F-4 Phant—

Ever wonder what happens when an F-4 Phantom going 480 mph smashes into a 12-foot-thick reinforced concrete wall? So did researchers at Sandia Labs in 1998. Here's what they found out:

Answer: Not good (for a more scientific explanation, see Sandia.gov). Here's a slo-mo vid of same:

Related link: Amazing F/A-18 Crash