Bright light in sky turned into orange triangle and then disappeared into the night

There was a large bright white light that looked like a planet or star, but it was barely getting dark so there were no other stars out. The 'star' then got bigger and bigger until it was taking up a large portion of the sky and it was clear it was being controlled. It then transported quite some distance away in an instant, at this time the craft appeared as a triangle and was emitting an orange light. It then disappeared as fast as it appeared, leaving only a trail from the assumed engine. This was between 29 Palms Marine Base and Fort Irwin Army Base, in the middle of the desert. I didn't feel scared but rather thought this was a casual observation.