Black Triangle Sighting in Sydney , New South Wales on 2017-08-01 14:27:00 - Observed 6-7 triangle objects flying effortlessly at times spinning, gyrating and appeared to be frolicking

In the first instance i saw a qantas a330 making a slight left turn probably receiving vectors from the airport i am assuming . i then turned my glance slightly to the right side then noticed 6-7 triangle objects darting in and out of the clouds at safe distance from the a330. these objects appeared to be criss crossing each other, hovering, then gliding horizontally heading in a westerly direction. these objects appeared to be frolicking in and out of the cloud coverage in somewhat playful manner undoubtedly the afternoon was beautiful with the sun shining and as these objects turned they had a reflective surface. they appeared not very large in size and no noise what so ever. these objects flew over my workplace (a military base at holsworthy) and it is also common for commercial aircraft to fly over the base. i also had a work colleague who witnessed this event too date: 1st aug 2017 at approx 14:27 hours. my iphone video somehow did not work, although i managed to take some grainy photos which i will attach. in order to see some of these objects via my somewhat grainy photos, you will need to expand. i photo has two objects and the rest disappeared into the cloud. the other photo has the triangle object surface of the cloud coverage (top of the cloud photo). the first photo after expanding on it you can see 6 objects in the distance -top right of the picture.