One of the GTD Ferraris loses power and a full course yellow ensues. A half hour to go:

DPi—now #60 Acura, #10 Acura, #31 Cadillac

LMP2—now #8 Oreca (5th overall), #81 Oreca, #52 Oreca

LMP3—nnow #74 Ligier (14th overall), #33 Ligier, #54 Ligier

GTD Pro—now #9 Porsche 911 (19th overall), #2 Porsche 911, #14 Lexus RC F (Corvettes still 6th and 10th in a class of 13)

GTD—stlll #16 Porsche 911 (24th overall), #21 Ferrari 488, #44 Aston Martin Vantage

About 48 cars are still running.