The US Kadena Air Force Base is Marked from Above

 - Oct 18, 2010
References: & newslite
Finally confirmation: the United States Army is working with Batman, as indicated on the roof of the Kadena Air Force Base in Japan. But jokes upfront, the US's 44th Fighter Squadron actually placed this superhero symbol as a quip, denoting their nickname as "the Bats."

The Kadena Air Force Base makes itself known from the skies, suggesting a comical confidence in its strength and intelligence. Measuring roughly 30m by 15m in size, you don't need sonar to spot this white-washed Batman symbol.