The USAF used to use "chicken guns" to shoot chickens at planes to simulate bird strikes (no idea if they still do). The Brits thought that was a cool idea and built one themselves. They had a BIG problem though, the chickens were blowing right through the windows, nosecones, literally anything they hit. They called the guys in the USAF and asked what was going wrong. The response was, "Thaw chickens first". Now if a fucking frozen chicken is blowing holes through airplanes, imagine what inches thick steel beams that out-mass the chickens by multiple orders of magnitude would do.