I seem to be the only one of my siblings to recall this event. i do not understand why this is.

myself and some of my siblings were outside afterdark and i heard this exstremeley loud whirring,rotating sound closely over my head.i looked up,and the u.f.o.was hovering over myself and siblings.it was so close that i was able to see its shape.it was disc shaped.
there was a white flourescent type light completely around the middle of it.it began to do movements,maneuvers higher in the sky above us.we lived near two irragation ditches and highpower lines.the maneuvers it was doing,were lightening fast.it was as if it was putting on a preformance for us.it was zig-zagging in a closed v formation.after that it slowed down,and i noticed as it did,its engine sound was at a lower sounding pitch.
as it began to take off,slow,at first,as it picked speed the sound and pitch of the eng- ine became much higher and it just blinked out,as if turning off a light switch.i do not know why in the world it decided to pick abunch of kids to hover over.i was 8-9 yrs old.
Witness provides no contact information.  PD