Patricia Kiger

Ok, have I lost my mind or am I the only one that heard the second explosion? Beth's office blew up, John is shot, Kayce is on the phone with his wife and she hears shooting when they come after Kayce, then in the back ground behind her there is another explosion. Where is Tate? Did they blow up the house, the barn? I have watched it over and over and there is a second explosion no one is talking about.