What was found
APPROX 150 NM FROM CLT, THE WINDSCREEN BEGAN TO CRACK. THE CREW REQUESTED PRIORITY INTO CLT, HOWEVER DID NOT DECLARE AN EMERGENCY. DURING FLIGHT THE CRACK DID DEVELOP SOME, BUT IT STOPPED AS THEY DESCENDED. THEY LANDED SAFELY AND TAXIED TO THE GATE ON THEIR OWN POWER. THERE WERE NO TRUCKS ROLLED. UPON ARRIVING AT THE GATE, THE GROUND CREW TOLD THE FLIGHT CREW THEY WERE TOLD THERE WAS A MEDICAL EMERGENCY, HOWEVER THERE WAS NOT A MEDICAL EMERGENCY. IT IS CURRENTLY BELIEVED THAT ATC DECLARED AN EMERGENCY. INSTALLED CAPTAIN WINDSHIELD IAW CRJ900 AMM 56-11-01-400-801-A01-PSA. OPERATIONAL AND PRESSURE CHECKS GOOD.