The "vertical takeoff" is an everyday event at John Wayne Airport in Orange County CA. I love to watch the reactions of first-timers. Even though they make an announcement about the unusual flight path before takeoff, a lot of them still freak out. Also bare in mind these vertical climbs in commercial aircraft are with no pax, baggage and often minimum fuel, so they’re far lighter. Much more difficult to achieve when weighed down but that doesn’t mean they aren’t stable or safe, they absolutely are. It’s just far more difficult to vertically climb aircraft when it’s bogged down with everything. Military aircraft are a completely different breed though. They can do a lot more when weighed down. Gotta correct you on something. The tires on aircraft undergoing rejected takeoff testing are not deflated by ground crews, they automatically deflate by way of 'blowout plugs' on the wheels that are designed to release the pressure in an overheated tire to prevent the TIRE from blowing out. Just wanted to clarify that. Great advances in aircraft design but something is missing: better emergency exits and eject mechanisms for passenger airliners. The same pressurized tube fuselage makes modern airliners a mortal trap in case of surprise crash. Ejection seats have been a standard for military attack planes and bombers for pilots, navigators and crew. Can we design a passenger compartments fuselage capable of ejection and parachute landing? I think it's possible. It would be more expensive but it will save more lives.