Triangle OVer Lake Dallas - See Photo

• When: May 29th, 2015
• Where: Lake Dallas
• What: Red lights in a triangle

Wow, another Dallas area sighting! Keith C. sent a photo and brief testimony of three red lights forming a triangle in the night sky:

Three fire balls on a triangle. With 8 singles in a line behind it

What could it be? Is it related to other recent sightings in the area?