dome 's ceiling seconds before the ceiling crashes to the ground . Players and coaches rushed to help those trapped . `` It was as if someone took a stick pin and hit a balloon , '' said photographer Arnold Payne , who was shooting the practice for CNN affiliate WFAA-TV . Watch Payne describe being inside when structure collapsed '' Scouting assistant Rich Behm , 33 , suffered a severed spinal cord and is paralyzed from the waist down , the team said . He underwent surgery Saturday . `` Rich is a courageous member of our family and someone for whom we care deeply . We ask for all friends and fans of the Dallas Cowboys to join us in embracing him and his family with their thoughts and prayers at this very difficult time , '' team owner Jerry Jones said . Watch the roof collapse on players , coaches '' Special teams coach Joe DeCamillis fractured a cervical vertebra , and assistant trainer Greg Gaither had two broken bones in his leg , the team said . Gaither had successful surgery Saturday , and DeCamillis was scheduled to undergo surgery Monday , the team said .
-LRB- CNN -RRB- -- A federal agency is examining what caused the Dallas Cowboys ' practice facility to collapse on Saturday , paralyzing a scout and injuring 11 others . An aerial view of the scene shows the Dallas Cowboys logo amid the ruins of the indoor practice facility . `` We 're trying to determine if there were any violations , or determine the cause , '' said Elizabeth Todd , spokeswoman for Region 6 of the Occupational Safety and Health Administration . OSHA investigators will be interviewing witnesses and looking for identifiable hazards , she said . The procedure is routine and implies no wrongdoing , Todd said . OSHA has six months to finish its investigation . Meanwhile , the CEO of a company that makes similar buildings says he believes fewer people would have been injured if the Cowboys ' facility had been supported by air rather than a metal frame . About 70 people -- including players , coaches , staff and media -- were inside the metal-framed structure for a rookie mini-camp practice when a line of heavy thunderstorms hit the dome . Video from the incident shows the lights swinging violently from the