Ground crew of the 20th Fighter Group work on a P-38 Lightning (serial 42-67016) at Kings Cliffe air base, October 1943. Printed caption attached to print: 'Lightnings Attack Northern France. Versatile P-38 Lightnings, flashing their power across the English Channel for the first time in a combat role, bring new serial phase into the European Theatre of Operations. Well-trained pilots - some of them already experienced in the other theatres of war - and ground crews swear by their ships. From briefing room to flying line, from runways to skyways and contest with the enemy, each mission represents expert planning by Operations and Intelligence and the brains and sweat of every man who prepares an order or tightens a screw on a prop. Photo shows:- Ground crew giving P-38 a last minute check-up. U.S. Pool/SG/H. Keystone 62.'