support for the war in V.N. saw 5 disks froma distance of 25 miles.

I am 23 years old I am in the Army it is Sunday my day off.  I am scanning the sky's with a radar.  In the North there is a Island about 25 miles away there are 5 disks going up and down causing the radar to lock and unlock.  I call the officer of the day (O.D.) he comes out and looks then he returned to the control center to call the Air Force.  They send 3 fighters to investigate.  The planes get within a short distance from them, and disappear.  the planes turn around.  the discs reappear.  the planes turn around and as before when the planes get close, the discs disappear.  the planes turn around and go back to where they come.  the discs reapper.  I go back to my barricks.  the witnesses are myself, the O.D. 3 members on duty and 3 pilots.  
I have never forgoten this and I though I would never see them again then in January 2017 I see one up close.
Source of report indicates that the date of the incident is approximate.  PD