First up at Grand Sky is a security fence. Swoyer earlier this week received approval from the Grand Forks County Commission to have iconHD, a Grand Forks company, start on the 8-foot-high chain-link fence topped by three rows of barbed wire at the Grand Forks Air Force Base facility. General Atomics also signed a tentative agreement earlier this week to establish an unmanned aerial systems training academy at Grand Sky and is negotiating details of the lease.