OKLAHOMA CITY -- A gunman lay in wait outside Oklahoma Citys Will Rogers World Airport on Tuesday before shooting and killing a Southwest Airlines employee in a premeditated attack that occurred while hundreds of people waited for flights nearby, police said.Michael Winchester, 52, was shot while walking between a crowded terminal and the airport employee parking area. The unidentified suspect was later found dead in a pickup truck in public parking garage overlooking the scene. Police said the suspect appeared to die of a self-inflicted gunshot wound.Oklahoma City Police Capt. Paco Balderrama said the shooter apparently knew the victims schedule and routine.This individual went there and waited for the employee to either be coming or going to take this opportunity, Balderrama said. He wouldnt say conclusively that it was a sniper-type attack.The 1 p.m. shooting set off a scramble at the airport, with police immediately closing the sprawling complex and asking passengers inside to seek cover.They diverted incoming flights and refused to give already-loaded aircraft permission to leave. There were concerns the gunman might have entered the terminal and mingled among passengers or employees.We have a heightened level of security all the time. These people have access to aircraft so were very concerned about that, airport spokeswoman Karen Carney said.Winchester- whose address is listed as Washington, Oklahoma, about 35 miles south of the airport -- was a former University of Oklahoma football player whose son James is a player for the Kansas City Chiefs.It is with great sorrow that Southwest Airlines confirms that a Southwest Employee who was injured during a shooting incident today at Will Rogers World Airport in Oklahoma City has died from injuries, the airline said in a statement. It canceled flights out of the city for the remainder of the day even though the rest of the terminal planned to reopen.Hundreds of people were stranded inside the terminal for more than three hours before officers began letting them leave slowly. Carney said about 300 people were held on aircraft away from the terminal after their planes landed ahead of a ground stop.Once police determined that a suspect found in a red pickup truck on the second floor of a public parking garage was dead, officers gave an all-clear.The airport handles between 7,000 and 8,000 passengers daily for Alaska, Delta, Southwest and United airlines and has a separate terminal that serves as a transfer center for federal inmates. A jet carrying inmates to the transfer site was allowed to land while the rest of the airport was shuttered.Video from a television station helicopter showed what appeared to be a pool of blood about 100 feet from the airports employee parking area -- and about 100 yards from the airports ticket counters and departure area.While airports have high security, it wasnt immediately known whether surveillance cameras might show the shooting, Balderrama said.Balderrama initially said police had received reports of a possible second victim, but no one was found.Police found the suspects truck in the garage about three hours after the shooting and determined that someone was inside. They were not sure whether he was dead or alive. After about 75 minutes, using a robot, officers determined the suspect was dead.A number of inbound flights were diverted to other airports after Will Rogers suspended operations. Southwest redirected one flight back to Dallas while a Las Vegas to Houston flight that stops in Oklahoma City went to Amarillo, Texas, instead. Two commercial flights from Chicagos OHare Airport were directed to Tulsa, about 100 miles away.Michael Winchester was a punter on the University of Oklahomas 1985 national championship team.Our hearts are truly heavy for the entire Winchester Family. Mike was a former Sooner student athlete as was his son James/daughter Carolyn, the schools athletic director, Joe Castiglione, tweeted Tuesday afternoon. He added daughter Becca was also a student athlete. Please keep this beautiful family in your prayers in a later tweet.---Associated Press reporters Ken A. Miller and Tim Talley contributed to this report. Air Max 97 Cheap Mens . JOHNS, N. Air Max 97 Cheap Womens . He was followed closely by David Clarkson, donning red, seconds later. 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HOUSTON -- The Houston Astros began work on renovations to center field at Minute Maid Park on Monday that will remove Tals Hill and add field level seating.The renovations were supposed to be done last offseason but were postponed. The project, which will eliminate the hill and bring in the center field fence from 436 to 409 feet, will be completed by opening day in 2017.The change will mmake Houstons ballpark have the sixth-deepest center field after the old configuration made it the deepest in the majors.ddddddddddddThe renovations will also add three bars and four new concession stands as well as the only field-level seating in the ballpark. ' ' '