USN OS (Operations Specialist) CV-64 tracks UFO off coast of Brazil Summer '93

I was a combat operations specialist aboard the USS Constellation CV-64. The ship was on a cruise to return to our homeport of San Diego following an overhaul (SLEPT) in Philadelphia.  
Off the coast of Brazil sometime in the middle of the night, I was manning the SPA-69 Radar and reported a contact X miles (confidential scan range) away with a relative bearing of 300*.  Upon second sweep, the contact closed half the distance of our scan range.  Speed estimate given by computer and manually verified were in excess of 17k kpm. 
"Vampire" alert (inbound missle) was issued after second sweep.  Ship went to general quarters immediately.  Approximately 10 seocnds later 3 watches ontop of the island broker into hysterics over coms screaming, "It's above us, there is a light above us!" over and over again. 
This lasted about 8-10 minutes. No fire control fix was given, no planes were airborne or launched at this time.  The "craft" did not emit an IFF (international friend or foe) ident.  As per the comms, the craft simply took off straight up and disappeared.
Watch officer opened small safe beside standard log books and removed green standard Navy logbook and handed to me.  I did not read prior log entries but had to skim through half the log to find the next available page to make entry.  In my excitement I proclaimed something to the effects of aliens.  I was quickly admonished by the watch officer and advised to report the facts only, Time/Date/Location/Position/Estimated Speed/ Type of craft.   I logged as an Unidentified Flying Object. I was then advised to "Log it and forget it".  The small safe contained over 20+ log books.
Source of report indicates that the date of the incident is approximate.  PD