A high-altitude point-source of light was observed by telescope and binoculars for 15-20 min. by Air Force pilot officers from ground location and confirmed by radar reports as slow, at very high altitude and not ours.

((PLEASE SEE OTHER REPORT, WHICH APPEARS BELOW.  WE HAVE CORRECTED THE DATE ABOVE.  PD))
Date correction of original sighting report (1968 not 1969) of  UFO  over Otis AFB;  F-4s chased off UFO.
The incident posted on 9/12/99, regarding the 7/4/1969 sighting over Otis AFB was accurate, except the correct year was 1968.  
I was with the 552nd Air Police Squadron and on the evening of 7/4/1968, I was guarding the Falmouth Gate-one of the three perimeter gates.  That evening was uneventful until ~2100 hours.I received an urgent phone call from my Sergeant, who ordered me to close the Falmouth Gate, adding that we had been placed on Full Base Alert! 
After approximately 1 hour, he called back to say that the Alert was over and to re-opened the Gate.  Later,the SGT came out and informed me that there had been an actual UFO hovering over our underground missile site; that our F-4 jets had scrambled and were on an intercept course. The intruder then initiated a 360`maneuver, accelerated at an unimaginable speed and was gone.
((END))
Witness indicates that date of incident is approximate.  PD