A Ukrainian soldier launches a hand-held drone in 2015 (Petro Zadorzhnyy/AFP via Getty Images) WASHINGTON — Heeding a congressional directive, the Pentagon’s Defense Innovation Unit (DIU) has selected four companies to proceed with development of long-range, one-way drones capable of reaching their targets amid stiff electronic warfare interference, the office announced today. The awards in the Artemis program went to US-based drone makers AeroVironment and Dragoon, as well as software firms