Corporate Training Unlimited is a "security contracting firm" operating in Iraq.
It is notable because its founder, and three of its employees, were arrested on June 5 2009 by Iraqi police investigating the first murder of American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 Jim Kitterman

Jim Kitterman

Jim Kitterman was an American citizen murdered in Iraq's Green Zone.Kitterman was a former United States Navy chief petty officer.He had worked in Iraq since the US invasion in 2003, for Kellogg, Brown and Root and other firms...

 in Baghdad

Baghdad

Baghdad is the capital of Iraq, as well as the coterminous Baghdad Governorate. The population of Baghdad in 2011 is approximately 7,216,040...

's "Green Zone

Green Zone

The Green Zone is the most common name for the International Zone of Baghdad. It is a area of central Baghdad, Iraq, that was the governmental center of the Coalition Provisional Authority and remains the center of the international presence in the city...

".

The firm was founded by Donald Feeney Jr. in 1986.
He is a former Delta Force

Delta Force

1st Special Forces Operational Detachment-Delta is one of the United States' secretive Tier One counter-terrorism and Special Mission Units. Commonly known as Delta Force, Delta, or The Unit, it was formed under the designation 1st SFOD-D, and is officially referred to by the Department of Defense...

 team leader.

The firm sent civilian guards to the war zone during the 1991 Gulf War.
The firm sent civilian guards and bodyguards to Iraq

Iraq

Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

following the US invasion in 2003.