later in that year the SAS captured some of those responsible. Task Force Black/Knight, 2004–2008, the new UKSF mission and deployment was codenamed Operation Crichton, a title that would remain in use until 2009 and the new UKSF codename for them in Iraq was known as "Task Force Black". An SAS team worked jointly with American Delta Force in a secret war against Al Qaeda and other insurgents based in Iraq. The Task Force size was roughly around 150 personnel and their "Black Ops" operation claimed to have cleared 3,500 insurgents off the streets with "several hundred" of them believed to have been killed. 6 SAS soldiers had also been killed and 30 injured in the Operation. General Stanley McChrystal, the American commander of NATO forces in Iraq, commented that A Squadron 22 SAS Regiment, when part of Task Force Black and Task Force Knight, carried out 175 combat missions during a six-month tour of duty. In the early months of 2004, the SAS used their capabilities in reconnaissance and surveillance to watch suspects and develop/gather intelligence for the coalition intelligence services. The SAS operational process in Baghdad was known as find-fix-finish, working backwards with the 'finish' part being a raid to take down a suspect, 'fix' involved pinpointing a time and place which a target can be taken and 'find' would be finding the insurgent/terrorist. In February 2004, they almost captured/killed Abu Musab al-Zarqawi the leader of AQI when they assaulted a house in Baghdad; after forcing entry they withdrew when they discovered a booby trap, they still managed to overwhelm the occupants of the building and captured intelligence revealed Zarqawi had left a short time before. By autumn 2004, Task Force Black were operating in a 'semi detached way'; due to senior British officials taking issues with mistreatment and poor quality cells at JSOCs detention facility at Balad (handing over to regular US Army units rather than sending them to Balad), the deportation of detainees captured in Operation Aston etc. that JSOC had no other choice but to unconsciously end UK-US cooperation in special operations in Iraq - given the importance of rapidly exploiting intelligence. On 11 April 2005, G squadron, SAS captured Fadhil Ibrahim al-Mashhadani, one of Saddam Hussein's former apparatchik after assaulting a farm north-east of Baghdad that intelligence had traced him to. At about the same time, in an attempt to find the kidnappers of