by British forces. SEALs were also involved in various VBSS missions with British and Australian forces to seize Iraqi craft carrying seaborne mines. Coalition military planners were concerned that retreating Iraqi forces would destroy the Mukatayin hydroelectric dam, located 57 miles northeast of Baghdad, in an attempt to slow advancing US troops. In addition to restricting the manoeuvre of Coalition forces, the destruction of the dam would deny critical power needs to the surrounding area, as well as cause massive flooding and loss of Iraqi civilian life. A mixed team of SEALs from SEAL Team 5 and Polish GROM was called in to seize the dam. This force was flown several hours by six US Air Force MH-53J Pave Lows; the force consisted of 20 SEALs (with an extra six SEAL snipers in one helicopter carrying the SEAL command and control element) and two EOD operators along with 35 GROM operators to the dam. The SEALs employed DPVs into blocking positions to defend against counter-attack and roving bands of Iranian bandits that had been crossing the border and raiding Iraqi towns. As in Al Faw, the SEALs found their DPVs (the SEAL unit at the al-Faw MMS lost all but two DPVs when they were bogged down in the oily mud) to be ineffective and this marked the last time they would employ them in Iraq. The SEALs and GROM on foot fast-roped out of their helicopters and immediately stormed the dam. The minimal Iraqi troops guarding the dam surrendered without a fight, and with the exception of a GROM soldier who broke an ankle during the insertion, no casualties were sustained in the operation. After several hours of searching the dam for remaining hostile forces or any explosives, the SEALs secured the dam and held it for five days until they were relieved by advancing elements of the US Army. During the Battle of Basra, SEALs along with the Brigade Reconnaissance Force and 539 Assault Squadron RM attempted a waterborne approach to Basra via the Shatt al-Arab waterway but were intercepted by Iranian Revolutionary Guard patrol craft and did not want to engage them so they withdrew. On 6 April 2003, after relocating further up the waterway they successfully infiltrated via the waterway, using SEAL UAVs they called in "show-of-force" and an airstrike by a USMC Harrier on Iraqi troops, the SEALs then headed to "Chemical Ali's" house with