 Complete the following phrase:  On February 1, 2003, Columbia and her crew of seven were lost during re-entry over Texas during the STS-107 mission the 113th shuttle flight; a vehicle breakup triggered by damage sustained during launch from Pad 39A on January 16, when a piece of foam insulation from the orbiters external fuel tank struck the orbiters left-wing. During reentry, the damage created a hole allowing hot gases to melt the wing structure. Like the Challenger disaster, the 