<a href="https://en.wikipedia.org/wiki/B-17_Flying_Fortress" class="extiw" title="en:B-17 Flying Fortress">B-17F</a> preparing to take off from <a href="https://en.wikipedia.org/wiki/RAF_Polebrook" class="extiw" title="en:RAF Polebrook">RAF Polebrook</a>.
USAAF
USAAF