STS-114 was the first of two Return To Flight missions for the Space Shuttle after the STS-107/Columbia accident and the second time Discovery flew the program's Return To Flight mission. The flight coincidentally launched at the exact same local time at the launch site (10:39:00 am Eastern) as when Columbia had launched on STS-107. This was the second Shuttle flight commanded by a woman. Discovery's crew resupplied the International Space Station, demonstrated some safety upgrades/improvements, and performed the first in-space repair of a Shuttle's heat shield. A large foam shedding event during launch grounded the Shuttle and proved NASA had not completely solved the issue that brought down Columbia and her crew. This and Hurricane Katrina's impact on New Orleans (where the External Tanks were built) resulted in a year-long stop of Shuttle launches.