White lights with a red pulsating strobe in a linear formation over St. Louis, MO.

At 0430, I took my dog outside for a walk.  I looked up into the sky and noticed 3 bright white lights in a "V" shape off to the SE.  From my perspective, I would prognosticate that they were about 2-3 miles away.  At first, it looked only moderately out of the ordinary and no sound was heard.  About 30 seconds later the lights flashed a very bright pulsating red strobe light which last for about 5 seconds.  I did not have my phone, so I ran to my apartment which was only 30 feet from my location at the time.  I grabbed my phone and ran back outside.  Upon return, the lights had traversed a significant distance South (estimate 15-20 miles) and maintained that distance for 1 hour.  I did take pictures and video, however the lights were too far to render any valuable imagery.  I continued to watch the lights hover and no additional strobe lights were observed.  During this time a total of 5 white lights could be seen in a linear pattern and would turn on and o! ff intermittently.  At 0530, the lights dissipated and were no longer visible.  No other individuals in the area were present to my knowledge.