They set the 2047 as deadline, beacuase by 2037 they would have ground tested various weapons and aircrafts (eg. LM FB-22). However several papers and articles

They set the 2047 as deadline, beacuase by 2037 they would have ground tested various weapons and aircrafts (eg. LM FB-22). However several papers and articles I read time ago, reported that the DoD was searching for advanced methods (read AI-like) to recognize enemy vehicles (and personnel). Unfortunately I can't find the links.