My parents & I & my brother were walking to a resturant & we saw 4 flying objects flying in formation.

My father called out to two woman walking on the other sidewalk & they also saw them, but got very scared & left.  
We watched for about 5min. 
I was about 6 or 7, my brother about 5.  
It was very strange, being so young & seeing that. We were on  our way to Linton's resturant in Chester, Pa.
Date may be approximate, although the witness does not indicate that fact.  We suspect the sighting occurred in the afternoon, so we have amended the time above to 17:45 hrs..  PD