Within months, the Luftwaffe would duel the Royal Air Force in the Battle of Britain.

FORBES: Connect

And at one point, we looked at a land-air battle construct where the Army and Air Force attempted to compare their respective capabilities and improve on those, and achieve synergies over land that would cause us to make an evolutionary step from -- or within the joint warfare concept.

WHITEHOUSE: Press Briefing with Ben Rhodes and Admiral Robert Willard

But the analysts in the cavernous room at Langley Air Force Base in Virginia relive the explosions, the carnage and the vivid after-battle assessments of the bombings over and over again.

NPR: AP IMPACT: Combat Stress Felt Far From Front Lines