Seven D impact window testing - missile test 3 

ASTM E1996 test, not Miami Dade large missile version. ASTM allows 3" radius for impact, MDC allows 6". However test was invalid, the 2x4 was too far from the bottom edge vertically, totally outside the 3" radius. ATI designed and built equipment (cannon, wall, etc)

I was expecting something heavier and faster ... the test seems like an amateur one. So it stops a flying metal traffic signal?

yes 1st comment lol