Sentence:  The development of a nuclear-powered ship with a standard-displacement of a 75,000–80,000 tons with an aircraft fleet of “No less than 7 LAk [carrier-based aircraft],” which included fighter aircraft, ground attack aircraft, and ASW, RTR [radio-relay support], <WSD>REB</WSD> [electronic warfare], and RLD [radar picket] aircraft and various types of helicopters. 
Meaning of the word marked with <WSD> tags:  electronic warfare and related techniques, equipment, or troops.