Please try again later. Watch this video to properly learn how to rethread your Safety 1st Alpha Omega car seat harness. Also applies to the Cosco Alpha Omega, Safety 1st Alpha Omega All in One, Able 65, Aquos 65 and All in One Sport car seats.atch this video to properly learn how to rethread your Safety 1st Alpha Omega car seat harness.
Story highlights. 1  Chuck Yeager was the first test pilot to break the sound barrier. 2  In 1947, he flew past Mach 1 after being dropped from a B-29 bomber at 45,000 feet. 3  Yeager said he laid down a pretty good sonic boom over Edwards Air Force Base.
How Fast is Mach 1. The speed of sound is one of the key speed barriers in physics. It is also important because it one of the few natural speed barriers mankind has been able to break. However when we here the term Mach 1 it is easy to assume it is the speed of sound through Earthâs atmosphere. However this term is more loaded than you might think.