The FAA has added a second controller to the weekend overnight shift at Bluegrass Airport, following the crash of Flight 5191 Sunday. Only one controller was in the tower early Sunday morning when the CRJ100 attempted to take off a runaway too short for it to gain enough speed to become airborne. FAA spokeswoman Laura Brown declined to give a reason for the decision. Brown says two controllers are in the tower on weekdays but only one controller was scheduled for the weekend overnight shift because traffic was significantly lighter.