— Stephen Hayes (@stephenfhayes) August 16, 2016
JTF-GTMO completed its threat assessments before the Obama administration took power, establishing threat categories color coded like a traffic light. The entire detainee population was placed into one of three categories: green (low risk), yellow (medium risk), and red (high risk). JTF-GTMO considered the detainees in the last category—the so-called red-light detainees—to be the highest risk and generally recommended that they be retained in the Defense Department's custody. JTF-GTMO deemed all 15 of the detainees transferred to the UAE to be red-light detainees.Another one of the detainees was recommended for prosecution, meaning Obama's task force concluded that 9 of the 15 should remain in U.S. custody.
According to JTF-GTMO's leaked threat assessments, they include: (see here, here, here and here); ; two members of bin Laden's 55th Arab Brigade, which was al Qaeda's primary paramilitary force in pre-9/11 Afghanistan (see here and here); a "sub-commander" at Osama bin Laden's Tora Bora complex; an al Qaeda "instructor" who swore allegiance to bin Laden; a member of an al Qaeda IED cell that planned to conduct attacks on U.S. and Coalition forces in Afghanistan; two al Qaeda operatives "who planned to participate in terrorist operations targeting US forces in Karachi, Pakistan (PK), and possibly inside the United States" (see here and here); and two other now former detainees who allegedly took part in attacks against the United States and its allies in Afghanistan. While the Defense Department portrays the transfer as a "humanitarian" move, the intelligence professionals at JTF-GTMO were more concerned about what these jihadis could do if they returned to the battlefield.
— Phil Mattingly (@Phil_Mattingly) August 17, 2016