The flag bridge was used as Navigation Department's work center since no flag officers sailed on her after becoming a training carrier. There was a brass historical plaque on the overhead that read: "On this spot, on June 19, 1944, during the battle of the Phillippine Sea, Admiral Marc Mischer gave the order to 'Turn on the lights'". The Lexington was his flagship during this battle (I think there were around 15 CVs in this task force) and, after a day of merrily wiping out the remainder of Japan's naval air force, the aviators were coming home in the dark. The order to turn on the lights of the task force in order for the flyers to find their way home flew in the face of submarine evading tactics and was a pretty ballsy thing to do. It was effective though, and most of the planes made it back, even though many had to ditch and be rescued by plane guard DDs. This battle became known as the Great Mariana Islands Turkey Shoot.
Also, the lame movie "Midway"was filmed on board the Lexington and much of the footage showing Glenn Ford and Charleton Heston conversing was shot on the flagbridge. We, the crew, got an exclusive viewing of the movie prior to its release. It was in "Sensurround" sound and was actually a good movie to see in a theater that was equipped with this system.