SAN LUIS, Ariz. -- The border fence ran right in front of Jeff Byerly's post, a straight line of steel that stretched beyond town and deep into the desert. As a U.S. Border Patrol agent on America's front line, Byerly's job was to stop anyone from scaling the barrier. Hours into his midnight shift, his stare was still fixed, but all was quiet.

He pounded energy drinks. He walked around his government vehicle. On the other side of the fence, the bars in the Mexican town of San Luis Rio Colorado closed, and only the sound of a passing car broke the silence. Byerly, 31, switched on his DVD player. Minutes later, a supervisor knocked on the window: The slapstick comedy "Johnny English" was on; Byerly was fast asleep.

Wild foot chases and dust-swirling car pursuits may be the adrenaline-pumping stuff of recruitment efforts, but agents on the U.S.-Mexico border these days have to deal with a more mundane occupational reality: the boredom of guarding a frontier where illegal crossings have dipped to record low levels.

Porous corridors along the 2,000-mile border do remain, mostly in the Tucson area, requiring constant vigilance. But beefed-up enforcement and the job-killing effects of the Great Recession have combined to reduce the flood of immigrants in many former hot spots to a trickle.

Apprehensions along the Southwest border overall dropped from 2000 to 2010, from 1.6 million to 448,000, and almost every region has lonely posts where agents sit for hours staring at the barrier, watching the "fence rust," as some put it.

"When the traffic stops . . . of course it's going to be difficult for the agents to stay interested," said Supervisory Agent Ken Quillin, from the agency's Yuma, Ariz., sector.

To stay alert, agents are encouraged to walk around or take coffee breaks. Some agents play video games on their mobile phones or read books. There are agents known as "felony sleepers" who intend to slumber -- bringing pillows or parking in remote areas -- but most dozers are victims of monotony who nod off despite their best efforts to stay awake.

On a recent day, agent Jeff Bourne and his partner, Fernando Salazar, rode their patrol bikes through Friendship Park.

Years ago in the same area, Bourne said he helped catch 180 people in one day. Halfway into his recent shift, his crime-stopping efforts consisted of stopping a young man from dropping a soda can in the park. Still, bike patrol, the partners agreed, is a lot better than being stuck in a parked car waiting for action that never comes.

"Sitting in the same spot for eight hours looking at the same thing . . . it drains you," Salazar said.

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Penn Station renovations ... Target recalls baby wipes ... LI Catholic group's challenge to diocese Credit: Newsday

18 repeat retail shoplifters charged ... Penn Station renovations ... Hochul: $146M to repair LI roads, bridges ... Out East: Jamesport Country Store

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