As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, THE NR 1 ENGINE FIRE WARNING ILLUMINATED. THE TAKEOFF WAS ABORTED AT 120 KNOTS AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE FOUND A 14TH STAGE BLEED AIR DUCT CRACKED. THE DUCT WAS REPLACED AND ENGINE RUN AT HIGH POWER WAS NORMAL.