It was a frantic last second call from the controller. >> Take off. Take off, sir.Southwest. >> A Southwest 737 cleared for takeoff, rolling down runway 22 at 115 mph in San Antonio when a private Pilates PC12 plane suddenly made a wrong turn onto the same runway heading towards the 737. A head-on crash just seconds away.>> Careful takeoff, clear takeoff, clear southwest. >> They stopped in time. The plane safely departed for Dallas an hour later while another Southwest flight preparing to land was ordered ...