After power was lost, the radars were disconnected to allow restoration of the power grid. The ship lost track of an Sa'am frigate and an Iranian P-3 that it had been monitoring. Ten sailors were medevaced by HC-5 CH-46s embarked on San Jose for injuries sustained in the blast; six returned to Samuel B. Roberts in a day or so. Four burn victims were sent for treatment to a military hospital in Germany, partly through the assistance of the 2nd Aeromedical Evacuation Squadron, USAF. Eventually they were moved to medical facilities in the United States. When U.S. divers recovered several unexploded mines, they found that their serial numbers fitted into the sequence on mines seized the previous September aboard an Iranian mine-layer named . Four days later, U.S. forces retaliated against Iran in Operation Praying Mantis, a one-day campaign that was the largest American surface engagement since World War II. U.S. ships, aircraft, and troops destroyed two Iranian oil platforms allegedly used to control Iranian naval forces in the Persian Gulf, sank the Iranian frigate IRIS Sahand (1969), damaged another, and sank at least three armed high-speed boats. The U.S. lost one Marine helicopter and its crew of two airmen in what appeared to be a night maneuver accident rather than a result of hostile operations. Repairs On 27 June 1988, Samuel B. Roberts was loaded onto , a semi-submersible heavy lift ship owned by Dutch shipping firm Wijsmuller Transport and carried back to Newport for $1.3 million. The frigate arrived at BIW's Portland, Maine, yard on 6 October 1988 for repairs. The repair job was unique: the entire engine room was cut out of the hull, and a 315-ton replacement module was jacked up and welded into place. She undocked 1 April 1989 for sea trials. The repairs were completed three weeks ahead of schedule at a cost of $89.5 million, $3.5 million less than expected. By comparison, , which was damaged by a moored mine during the 1991 Gulf War, was repaired for $24 million; however, the cruiser was not directly struck by the mine and her displacement is nearly twice that of Samuel B. Roberts. The mine that nearly sank Samuel B. Roberts had an estimated cost of $1,500. After 13 months of repairs, Samuel B. Roberts was returned to service in a 16 October 1989 ceremony. After repair Samuel B. Roberts made her second deployment in