. >> the tsa officer, the first to die in the line of duty was declared dead at ronald regan hospital where several of the dead were taken. police scoured the area to make sure of no other dangers. 750 flights were affected. some never left lax, others never left other cities. passengers streamed out of lax, pulling luggage, looking for transportation and hotels. >> we are trying to find a rental car place. when they let us go, we'll go. >> there were reports paul ciancia told his family he was unhappy. investigators have not confirmed a motive for the shooting, that puts the focus on the safety of airports and travel. >> later in the day the transportation security administration identified the dead officer as gerardo i. hernandez, he was 39 years old. >> paul ciancia's parents live in pennsville new jersey. on friday the police chief told reporters that paul ciancia's father received disturbing text messages. the message hinted that he was thinking about suicide. neighbours from the community expressed shock. >> it's tragic. you know, who would have thought anything like this would