Runway incursion between United A320 and Delta Airlines B757, Fort Lauderdale-Hollywood Airport, Fort Lauderdale, Florida, July 11, 2007, OPS07IA006 ; and, Runway incursion between Republic Airlines Embraer 170 and SkyWest Embraer 120, San Francisco International Airport, San Francisco, California, May 26, 2007, OPS07IA004. (National Transportation Safety Board, 2007)