These sounds are quite similar to those booms heard in Church Falls, VA.
I took this video about 2 weeks ago. I uploaded it today because I listened to one taken in Virginia and it sounded the same to me. I tried to follow the sound in my car but could not find anything, nor did I find any construction of any kind.
There was also another vid posted in VA besides the one in Church Falls that you responed to. It was in the D.C. area and at the same time as the Church Falls one….obviously the same one, just from a different location.
If you ever hear these sounds or any other strange sounds again, please don’t hesitate to record and post…fascinating!