He just went down for his third attempt at a morning nap
Every time Lucas tried to take a nap this morning this loud booming sounds would wake him back up. (I have no clue what they were but they were louder than fireworks and shook the window. They would last for a few minutes and then stop and then repeat for the last hour.) They seemed to have stopped so I had to settle him down again and hopefully this time he gets to sleep for longer than a few minutes.