Washington D.C. is a fast moving place, and for those in the very
top echelons of power, both time and security trump cost efficiency when it comes to transportation. The Department Of Defense has trio of helicopter squadrons ready to fly these VIPs around the region, and to safety should something catastrophic ever occur.
The three squadrons covered are the US Army 12th Aviation Battalion, the US Air Force 1st Helicopter Squadron, and the US Marine Corps HMX-1 VIP Transport Squadron.
Excellent article written by Tyler Rogoway at
http://foxtrotalpha.jalopnik.com/these-elite-military-helicopter-units-fly-washingtons-p-1704260996
