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			 The variety of uniforms is a sign of the overlapping jurisdictions 
			that determine which federal, state or local agency - or even 
			airline - is responsible for security on any particular patch of 
			turf. That could make sweeping security changes at JFK or other 
			major U.S. airports difficult in the wake of the deadly Brussels 
			attack. 
 At JFK, the police department of the Port Authority - itself run 
			jointly by two states, New York and New Jersey - primarily controls 
			law enforcement. U.S. Customs and Border Protection checks identity 
			documents while the Transportation Security Administration, part of 
			the Department of Homeland Security, handles screening at security 
			checkpoints.
 
 Less visibly, the Federal Bureau of Investigation is often on the 
			premises along with other national agencies such as the Department 
			of Agriculture and the Bureau of Alcohol, Tobacco, Firearms and 
			Explosives. Airlines have their own uniformed security personnel. 
			The Port Authority can also call in the New York Police Department 
			if something goes wrong.
 
 The show of force may reassure travelers, but the patchwork of 
			agencies could be a barrier to changes in security procedures, such 
			as making airline terminals a single security zone.
 
 
			
			 
			Some have suggested that as a way to prevent attacks such as the one 
			at a check-in area at Brussels' main airport on Tuesday, part of a 
			series of explosions that killed at least 31 people.
 
 JFK is not unique, and other major U.S. airports share similar 
			complexities.
 
 “It’s gotten a lot worse. There are a lot more law enforcement 
			agencies involved now than there used to be," said Robert Mann, an 
			aviation industry consultant, who described the complicated 
			choreography of security at airports as "ballet."
 
 The airlines and the airport operators dislike disruption, and are 
			counting costs minutely, while security agencies tend to want 
			complete control, said Mann. "There is a natural tension between all 
			of these parties, and it’s brought to a head every time you try to 
			make a change.”
 
 Even the smallest adjustments require effort.
 
 "Prior to redeveloping Terminal 5 at O’Hare, we engaged with all of 
			our stakeholders including TSA, as a major element of the redesign 
			was reconfiguring the security checkpoint,” said Rosemarie Andolino, 
			recalling her experience as commissioner of the Chicago Department 
			of Aviation. She is now chief executive of the U.S. unit of 
			Manchester Airports Group.
 
 Lines of demarcation differ from region to region. At O'Hare and 
			Midway airports, the Chicago Department of Aviation has a police 
			force whose officers carry collapsible batons but not firearms, 
			which are instead wielded by city police on Chicago airports' 
			premises. At Reagan and Dulles airports in the Washington metro 
			area, airport police carry guns.
 
 Even if JFK were to be reorganized, the intense bureaucratic 
			upheaval may not provide a model for other airports.
 
 "If you've seen one airport, you've seen one airport," said Mark 
			Crosby, director of public safety and security at Portland 
			International Airport, suggesting that one solution does not fit 
			all.
 
 A spokeswoman for the Port Authority, which operates New York's 
			airports, said “coordination is critical” when it responds to a 
			security event, and it runs regular drills with security partners. 
			She declined to comment on whether the multiplicity of agencies at 
			JFK might hinder change.
 
			
			 
			
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			FOLLOW ISRAEL
 The Brussels attackers exploited the fact that security is more 
			focused on preventing attacks on airplanes rather than in airports. 
			In Western Europe and the United States terminals are easily 
			accessible public spaces. That is not the case in countries where 
			attacks are more common.
 
 At Israel's Ben Gurion Airport, at times suggested as a model for 
			tough security, private security companies trained by the national 
			security agency Shin Bet profile passengers, use bomb-detecting 
			devices and question individual travelers, under the watch of police 
			at the airport's entrance.
 
 But that approach has limitations, and may just shift the target to 
			another location at the airport, experts said.
 
 “Wherever your security checkpoint is, you’re still creating a 
			target for bad people (that) you’re never going to eliminate," said 
			Crosby. "People love to cite the Israeli model. They created it more 
			like a military facility in Iraq. But as we know, those still get 
			attacked.”
 
 Meanwhile, there are security limitations in the existing apparatus.
 
 TSA is "working on moving toward high-speed baggage screening, but 
			it's not something TSA can do on their own," James Norton, a 
			homeland security consultant and former DHS official, said. 
			"Airports have to be a part of the conversation and see that they 
			have the infrastructure and funding to support it.”
 
 That brings in airlines, whose airport usage fees typically fund 
			half or more of an airport's budget. Because of that, airlines 
			effectively have veto power over airports' capital spending plans, 
			said Crosby.
 
 The attacks of Sept. 11, 2001, which put in motion the creation of 
			the TSA, focused airlines' attention on security. But air carriers 
			can still be reluctant to spend beyond what is required by U.S. law, 
			said Crosby.
 
			
			 
			Airlines stressed that security is a priority.
 
 "One of the reasons we are in the safest period of aviation is that 
			when it comes to safety and security, we are never done," said trade 
			group Airlines for America. "We continuously work with federal and 
			local authorities... to ensure we are as prepared as possible to 
			protect passengers, crew and aircraft."
 
 There is no suggestion that the Port Authority is not able to 
			co-ordinate the many agencies operating under JFK's roof. But the 
			situation on the ground can be confusing.
 
 At JFK on Wednesday, a group of heavily armed Port Authority 
			officers said they had no problem with a Reuters cameraman filming 
			the curbside scene.
 
 But minutes later, a private security guard ordered the Reuters 
			journalists to leave the terminal and walk across the street to an 
			outdoor parking lot.
 
 (Reporting by Jeffrey Dastin, Joseph Ax and Hilary Russ in New York, 
			Julia Edwards in Washington and Dan Williams in Jerusalem; Editing 
			by Joseph White and Bill Rigby)
 
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