A cross-country flight was diverted to Oklahoma City Friday night following an incident on board. Officials say a Delta flight from Los Angeles to Atlanta was interrupted when a passenger made an announcement telling others to get ready to put on an oxygen mask. KFOR reports the passenger was an off-duty flight attendant who had to be subdued by other passengers and staff on board. He was taken into custody in OKC before the flight continued on to Atlanta. The man's identity is not known at this time.