There are ~3,500 Air Marshals     https://web.archive.org/web/20180213030017/https://www.cnn.com/2014/02/25/us/air-marshals-cut/ There are ~87,000 flights that cross the United States in a given day          http://www.rightthisminute.com/video/tracking-87000-flights-day There is a very little chance she has an Air Marshal on her plane, but good chance she has secret service.