PORTLAND, Ore., May 6 -- FLIR Systems Inc. has been awarded a $7.3 million contract by the Naval Surface Warfare Center to complete the upgrade of the infrared (IR) imaging systems used on the US Marine Corps' fleet of UH-1N "Huey" helicopters. Under the contract, FLIR will complete the upgrade of the Marine Corps' SAFIRE thermal imaging systems to its Star SAFIRE system. The Star SAFIRE system uses focal plan array technology. Deliveries are expected to be complete by Dec. 31.