The presidential helicopter was involved in a so-called “loss of standard separation,” which requires aircraft to be at least 1.5 miles horizontally and 500 feet vertically away.
FAA Probes Safety Incident In D.C. Involving President’s Marine One Helicopter
The presidential helicopter was involved in a so-called “loss of standard separation,” which requires aircraft to be at least 1.5 miles horizontally and 500 feet vertically away.
forbes.com