Tom Clancy's Ghost Recon is a series of military tactical shooter video games published by Ubisoft. In the series, the player is in charge of a fictional, newly conceived squad of U.S. Army Special Forces soldiers from Delta Company, 1st Battalion, 5th Special Forces Group (5th SFG) stationed at Fort Bragg. Except for the "1st Battalion, 5th SFG" designation, this reconnaissance unit is entirely fictional, as Special Forces Battalions currently only support three Companies (A, B and C). They are often referred to as "the Ghosts". Their role is like other real world special operations forces, in that their operations are kept highly classified. In Tom Clancy's Ghost Recon: Future Soldier, it is shown that the Ghost's unit has multiple designations and is part of JSOC; they are also known as the Group for Specialized Tactics (or GST—where the term "Ghost" comes from), much like real JSOC units such as Delta Force (1st SFOD-D or CAG) and SEAL Team Six (or DEVGRU). Tom Clancy's Ghost Recon has also been novelized by Grant Blackwood under the pseudonym David Michaels.