Corley led the Building Performance Assessment Team (BPAT), which conducted an investigation of the structural performance of the Alfred P. Murrah Federal Building in Oklahoma City, following the bombing there in 1995. The BPAT was established three weeks after the bombing, which involved the American Society of Civil Engineers, as well as representatives from the Federal Emergency Management Agency (FEMA), the United States Army Corps of Engineers, the General Services Administration, and the National Institute of Standards and Technology. They found that the Murrah Building could have performed much better, if it had been constructed to standards used in earthquake-prone areas, with special reinforcing of key columns. The way the building was designed made it vulnerable to "a chain reaction of successive failures." Nonetheless, they pointed out that the Murrah Building met all government requirements that were in place, at the time the building was constructed in 1974.