Thorn EMI Plc’s Datasolve-owned, Farnborough, Hampshire-based Computeraid Services has won a pact with the US Air Force to maintain its Unisys equipment: the contract is initially for six months, but will probably be extended for another two years bringing its value to UKP125,000; the company, which has been security-cleared by the UK government, will send 15 engineers to US Air Force bases to service the Convergent Technologies boxes.