WE PROPOSE TO PERFORM MONITORING CAMPAIGNS FOR FIVE PULSARS FOUR OF WHICH CAN ONLY BE DONE VIA X-RAY OBSERVATIONS. OUR REQUESTED TOTAL EXPOSURE TIMES ARE 260 KS FOR PSR J0537-6910 48 KS FOR PSR J1412+7922 294 KS FOR PSR J1813-1749 60 KS FOR PSR J1849-0001 AND 200 KS FOR PSR J2229+6114. THESE DATA WILL ALLOW US TO COMPUTE ACCURATE PHASE-CONNECTED TIMING MODELS FOR EACH PULSAR WHICH WILL ENABLE LIGO/VIRGO TO PERFORM SEARCHES OF GRAVITATIONAL WAVES FROM THESE MOSTLY YOUNG AND POTENTIALLY STRONGER GRAVITATIONALWAVE EMITTING PULSARS. OUR PROPOSED OBSERVATIONS WILL OCCUR CONTEMPORANEOUSLY WITH LIGO/VIRGO'S NEXT MOST SENSITIVE OBSERVING RUN WHICH BEGINS IN SPRING 2019. IN ADDITION OUR HIGH CADENCE OBSERVATIONS OF PSR J0537-6910 WILL PROVIDE AN OPPORTUNITY TO FURTHER PIN-DOWN AND TEST THIS PULSAR'S UNIQUE GLITCH PREDICTABILITY AND TO MEASURE POTENTIAL X-RAY SIGNATURES ASSOCIATED WITH GLITCHES.