MARCH AIR RESERVE BASE, Calif.—The Air National Guardsmen who operate Predator drones over Iraq via remote control, launching deadly missile attacks from the safety of Southern California 7,000 miles away, are suffering some of the same psychological stresses as their comrades on the battlefield.

Working in air-conditioned trailers, Predator pilots observe the field of battle through a bank of video screens and kill enemy fighters with a few computer keystrokes. Then, after their shifts are over, they get to drive home and sleep in their own beds.

But that whiplash transition is taking a toll on some of them mentally, and so is the way the unmanned aircraft’s cameras enable them to see people getting killed in high-resolution detail, some officers say.

In a fighter jet, “when you come in at 500-600 mph, drop a 500-pound bomb and then fly away, you don’t see what happens,” said Col. Albert K. Aimar, who is commander of the 163rd Reconnaissance Wing here and has a bachelor’s degree in psychology. But when a Predator fires a missile, “you watch it all the way to impact, and I mean it’s very vivid, it’s right there and personal. So it does stay in people’s minds for a long time.”

He said the stresses are “causing some family issues, some relationship issues.” He and other Predator officers would not elaborate.

But the 163rd has called in a full-time chaplain and enlisted the services of psychologists and psychiatrists to help ease the mental strain on these remote-control warriors, Aimar said. Similarly, chaplains have been brought in at Predator bases in Texas, Arizona and Nevada.