The photo is a frame of a video from the JetBlue aircraft, showing the runway incursion

A Jetblue Embraer ERJ-190, registration N179JB performing flight B6-206 from Nashville,TN to Boston,MA (USA), was on final approach to Boston’s runway 04R cleared to land on the runway.

A single engine aircraft had been cleared to line up and wait on crossing runway 09, the crew of Embraer already cleared to land heard that clearance, acknowledge the clearance and proceeded onto the runway, however, commenced their takeoff run without clearance.

More info: https://avherald.com/h?article=50c9d066&opt=0