Dallas Cowboys chief operating officer Stephen Jones, left, talks on a phone after the canopy that covered the Cowboys indoor football facility collapsed, Saturday, May 2, 2009, in Irving, Texas. Four Cowboys staff members were injured when the roof collapsed on Saturday. Cowboys spokesman Rich Dalrymple said all of the players and coaches were accounted for, and he didn't know the extent of the injuries to the four staff members who were hospitalized. (AP Photo/Matt Slocum)

A fire fighter, center, stands surrounded by the collapsed canopy that covered the Dallas Cowboys indoor practice facility in Irving, Texas, on Saturday, May 2, 2009. Four Cowboys staff members were injured when the roof collapsed on Saturday. Cowboys spokesman Rich Dalrymple said all of the players and coaches were accounted for, and he didn't know the extent of the injuries to the four staff members, who were hospitalized. (AP Photo/Tony Gutierrez)

Emergency personnel stand near the Dallas Cowboys practice field structure that collapsed during a passing storm in Irving, Texas, Saturday, May 2, 2009. (AP Photo/Tony Gutierrez)

The collapsed canopy that covered the Dallas Cowboys indoor football facility lays tattered after a passing storm knocked it down, on Saturday, May 2, 2009 in Irving, Texas, . Four Cowboys staff members were injured when the roof collapsed on Saturday. Cowboys spokesman Rich Dalrymple said all of the players and coaches were accounted for, and he didn't know the extent of the injuries to the four staff members, who were hospitalized. (AP Photo/Tony Gutierrez)

Dallas Cowboys chief operating officer Stephen Jones, top left in khaki shorts, stands amongst other Cowboys personnel and emergency responders as the practice field structure lays collapsed, in foreground, following a passing storm in Irving, Texas, Saturday, May 2, 2009. (AP Photo/Tony Gutierrez)

Firefighters investigate the collapsed canopy that covered the Dallas Cowboys indoor football facility in Irving, Texas, on Saturday, May 2, 2009. Four Cowboys staff members were injured when the roof collapsed on Saturday. Cowboys spokesman Rich Dalrymple said all of the players and coaches were accounted for, and he didn't know the extent of the injuries to the four staff members who were hospitalized. (AP Photo/Tony Gutierrez)

Firefighters investigate the collapsed canopy that covered the Dallas Cowboys indoor football facility in Irving, Texas, on Saturday, May 2, 2009. Four Cowboys staff members were injured when the roof collapsed on Saturday. Cowboys spokesman Rich Dalrymple said all of the players and coaches were accounted for, and he didn't know the extent of the injuries to the four staff members who were hospitalized. (AP Photo/Matt Slocum