A shot wailed past his ear. He spun around, the pistol in his hand, & sna pped a return shot. There were men in black uniforms coming out o fthe jet. He fired again & felt a savage joy at seeing one of the black-clad figures spin on its heels & lurch to the ground. The time machine lay before him. No time for heroics; bullets were singing around him. He had to get away--fast!
Used availability for Poul Anderson's Past Times
June 1987 : USA Paperback
January 1987 : UK Paperback