CHATTANOOGA, TN - AUGUST 15: U.S. Vice President Joe Biden pauses as he speaks at a memorial service to honor those killed In Chattanooga shooting at University of Tennessee at Chattanooga's McKenzie Arena on August 15, 2015 in Chattanooga, Tennessee. The military is putting on the ceremony to honor the sailor and four Marines killed and to say thank you to the men and women who helped responded when Mohammad Abdulazeez shot up a military recruitment center and a Navy operations support center before being killed by law enforcement, (Photo by Jason Davis/Getty Images)A woman touches the boots on the battlefield cross for Gunnery Sgt. Thomas Sullivan at a memorial for the five military servicemen killed in the July, 16, attacks on two military facilities held Saturday, Aug. 15, 2015, at McKenzie Arena in Chattanooga, Tenn. Vice President Joseph Biden and Secretary of Defense Ash Carter spoke along with representatives from the U.S. Navy and Marine Corps. (Doug Strickland/Chattanooga Times Free Press via AP) U.S. Marines stand during taps at a memorial for the five military servicemen killed in the July, 16, attacks on two military facilities held Saturday, Aug. 15, 2015, at McKenzie Arena in Chattanooga, Tenn. Vice President Joseph Biden and Secretary of Defense Ash Carter spoke along with representatives from the U.S. Navy and Marine Corps. (Doug Strickland/Chattanooga Times Free Press via AP) U.S. Navy officers pay their respects at the battlefield crosses for the fallen servicemen at a memorial for the five military servicemen killed in the July, 16, attacks on two military facilities held Saturday, Aug. 15, 2015, at McKenzie Arena in Chattanooga, Tenn. Vice President Joseph Biden and Secretary of Defense Ash Carter spoke along with representatives from the U.S. Navy and Marine Corps. (Doug Strickland/Chattanooga Times Free Press via AP) Marines, family and friends listen to the Benediction at a memorial service Saturday, Aug. 15, 2015, in Chattanooga, Tenn. The service is for four Marines and a sailor killed as a result of attacks on a military recruiting station and a Naval operations center July 16 in Chattanooga. (AP Photo/Mark Gilliland)Navy Sailors appauld as Vice President Joe Biden finishes his speech at a memorial service Saturday, Aug. 15, 2015, in Chattanooga, Tenn. The service is for four Marines and a sailor killed as a result of attacks on a military recruiting station and a Naval operations center July 16 in Chattanooga. (AP Photo/Mark Gilliland)CHATTANOOGA, TN - AUGUST 15: U.S. Secretary of Defense Ash Carter speaks at a memorial service to honor those killed In Chattanooga shooting at University of Tennessee at Chattanooga's McKenzie Arena on August 15, 2015 in Chattanooga, Tennessee. The military is putting on the ceremony to honor the sailor and four Marines killed and to say thank you to the men and women who helped responded when Mohammad Abdulazeez shot up a military recruitment center and a Navy operations support center before being killed by law enforcement, (Photo by Jason Davis/Getty Images)Sailors and their families at a memorial service Saturday, Aug. 15, 2015, in Chattanooga, Tenn. The service is for four Marines and a sailor killed as a result of attacks on a military recruiting station and a Naval operations center July 16 in Chattanooga. (AP Photo/Mark Gilliland)Chattanooga Mayor Andy Berke speaks to the crowd at a memorial service Saturday, Aug. 15, 2015, in Chattanooga, Tenn. The service is for four Marines and a sailor killed as a result of attacks on a military recruiting station and a Naval operations center July 16 in Chattanooga. (AP Photo/Mark Gilliland)Sailors bow their head during the benediction at a memorial service Saturday, Aug. 15, 2015, in Chattanooga, Tenn. The service is for four Marines and a sailor killed as a result of attacks on a military recruiting station and a Naval operations center July 16 in Chattanooga. (AP Photo/Mark Gilliland)CHATTANOOGA, TN - AUGUST 15: Secretary of the Navy - Ray Mabus speaks at a memorial service to honor those killed In Chattanooga shooting at University of Tennessee at Chattanooga's McKenzie Arena on August 15, 2015 in Chattanooga, Tennessee. The military is putting on the ceremony to honor the sailor and four Marines killed and to say thank you to the men and women who helped responded when Mohammad Abdulazeez shot up a military recruitment center and a Navy operations support center before being killed by law enforcement, (Photo by Jason Davis/Getty Images)CHATTANOOGA, TN - AUGUST 15: Officer of Navy Operational Support Center Chattanooga - Lieutenant Commander Timothy White speaks at a memorial service to honor those killed In Chattanooga shooting at University of Tennessee at Chattanooga's McKenzie Arena on August 15, 2015 in Chattanooga, Tennessee. The military is putting on the ceremony to honor the sailor and four Marines killed and to say thank you to the men and women who helped responded when Mohammad Abdulazeez shot up a military recruitment center and a Navy operations support center before being killed by law enforcement, (Photo by Jason Davis/Getty Images)CHATTANOOGA, TN - AUGUST 15: (L-R) A memorial for Gunner Sergeant Thomas J. Sullivan, Staff Sergeant David A. Wyatt, Sergeant Carson A. Holmquist - United States Marine Corp, Logistics Specialist 2nd Class Randall S. Smith - United States Navy and Lance Corporal Squire K. Wells - United States Marine Corps is displayed on stage at a memorial service to honor those killed In Chattanooga shooting at University of Tennessee at Chattanooga's McKenzie Arena on August 15, 2015 in Chattanooga, Tennessee. The military is putting on the ceremony to honor the sailor and four Marines killed and to say thank you to the men and women who helped responded when Mohammad Abdulazeez shot up a military recruitment center and a Navy operations support center before being killed by law enforcement, (Photo by Jason Davis/Getty Images)
In a training first, an Army National Guardsman used a tablet to control Sikorsky's optionally piloted Black Hawk and plan its task during an exercise.
Industry and military drone operators flew tethered and untethered first-person drones through a course designed to test endurance and maneuverability.