The Naval Task Group for Operation VELA, a three-month deployment to West Africa in 2006, was under the command of Commander UK Amphibious Group, Commodore Phil Jones. The VELA deployment involved a significant number of Royal Navy and Royal Fleet Auxiliary ships, the Royal Marine Commandos and helicopters. The Task Group included , , , , , , , , , , , Mine Counter Measure Squadron 1 and a Fleet submarine together with the Fleet Lead Commando Group, consisting of 40 Commando Royal Marines, 59 Commando Independent Engineering Squadron, 29 Commando Royal Artillery and 539 Assault Squadron Royal Marines. Also involved were elements of Fleet Diving Unit 2 and 849 (B) Flight from RNAS Culdrose. Embarked in HMS "Ocean" for the deployment a Tailored Air Group (TAG) was formed, consisting of Sea King helicopters of 845 Naval Air Squadron, 846 Naval Air Squadron, Merlin Mk 1 aircraft from 820 Naval Air Squadron and Lynx helicopters of 847 Naval Air Squadron. The Vela task group conducted an amphibious exercise, Exercise Green Eagle, in Sierra Leone.