The initial members of the unit were screened from volunteers and put through a specialized selection process in early 1978, involving a series of land navigation problems in mountainous terrain while carrying increasing weight. While the course is constantly changing, the skills taught broadly to include the following: The Department of Defense tightly controls information about Delta Force and refuses to comment publicly on the highly secretive unit and its activities; usually unless the unit is part of a major operation or a unit member has been killed. Do no harm. The students then go back to the shoot house and the "hostages" are replaced with other students and Delta Force members. On 4 November 1979, 53 American diplomats and citizens were taken captive and held in the U.S. embassy in Tehran, Iran. Charlie Beckwith, a Special Forces (Green Berets) officer and Vietnam War veteran, served as an exchange officer with the British Army's 22nd Special Air Service Regiment during the Malayan Emergency. But under the shadow of Don't Ask, Don't Tell, everything fell apart when Matt was captured in Afghanistan. The 1st Special Forces Operational Detachment-Delta (1st SFOD-D), commonly referred to as Delta Force, Combat Applications Group (CAG), "The Unit", Army Compartmented Element (ACE), or within JSOC as Task Force Green, is an elite special operations force of the United States Army, under operational control of the Joint Special Operations Command. Zarqawi was tracked to a farmhouse in the village Hibhib northeast of Baquba on 7 June 2006, A squadron Delta Force in Baghdad prepared to attack Zarqawi's safe house but one MH-6 Little Bird engines lost power and would not restart, so JSOC called in an airstrike by an F-16C that wounded Zarqawi. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. In it Delta outlined its necessities and historical precedents for a four-phase selection/assessment process.. The operation was aborted due to problems with helicopter failures. During Operation Iraqi Freedom and Operation Enduring Freedom, the 1st SFOD-D was awarded the Presidential Unit Citation for combat operations in Afghanistan from 4 October 2001 to 15 March 2002 and Iraq from 19 March 2003 to 13 December 2003. The candidates are then put through a series of land navigation courses to include an 18-mile (29 km) all-night land navigation course while carrying a 40-pound (18 kg) rucksack. Watts had made it clear to Beckwith that it would take eighteen months to build a squadron, but advised him to tell the Army leadership that it would take two years, and not to "let anyone talk (him) out of this." The recruitment notices in Fort Bragg's newspaper, Paraglide, refer to Delta Force by name, and label it "...the U.S. Army's special operations unit organized for the conduct of missions requiring rapid response with surgical application of a wide variety of unique special operations skills...". Ex- Mossad agent Malik Dahan has lived for years in the shadows, straddling the very fine line between his own moral code and the missions his assassin role required.