Could someone please tell me what this dream means?

It starts out with my wife and iI doing the grocery shopping. Everything is proceeding normally until there was a loud noise. The other customers hear it as well and start heading for the doors. Thinking they might have the right idea I take my wife's hand and leave the store. as we are exiting I see a city bus pull away from a point where it crashed into the store. I commented to my wife that i had seen an article in the newspaper Saturday of a similar event happening to a different grocery store( I hadn't read any such article in real life) and that it appeared someone was stealing buses for the purposes of crashing them into grocery stores. . We got to our car and took off, but after getting only a few blocks away we decided that the incident was over and we should go back to shopping. Instead of parking the car in the lot we parked several blocks away and walked to the store. When we got there all the entrance and exits were cordoned off and there were several police units there, making it look like the store was closed while the incident was initially being investigated. We began walking back to the car. After crossing the main road and entering the residential side streets I noticed several of the houses were on fire. We increased our pace and i noticed more and more houses beginning to catch, not from the previous burning buildings, but spontaneously from their own interiors. Although I had no physical evidence i had the vague impression that the houses were catching fire due to natural gas leaks. We turned and entered a walled walkway the air in the walkway appeared hazy and, a short time after entering , a gout of flame began traveling up the corridor my wife made it out, but I was caught by the fireball as I was just about to exit. It hurt mildly and it felt as if my hair might have gotten slightly singed. In the next few moments i somehow got separated from my wife. All this time more and more houses were combusting, I tried to find my way back to the car, but couldn't seem to remember how to get there i figured my wife was already there as she has a far superior sense of direction to my own. I turned down more and more side streets and I was unable to spot any familiar landmarks. i came to another walled walkway and suddenly there were other people behind me forcing me to move with them down the walkway in order to avoid being trampled. another ball of flame formed at the far end and everyone ran for the entrance I was just about out again when i saw there was a woman at the mouth of the entrance staring transfixed at the fireball I embraced her and felt a similar result to the first one as it struck my back, The group and iI continued down several more streets surrounded by burning houses. We stopped as we caught sight of a police helicopter. The helicopter appeared to be armed with twin machine guns and rocket launchers the helicopter turned and fired. Bullets pierced the pavement ten feet in front of us and traveled until they struck a liquor store (not on fire) with a destroyed roof. a few seconds later two rockets flew out of the liquor store. I'm not sure if they struck the helicopter or not. It was then that several of the people in the group recognized their vehicles. I got into a minivan with and older couple and we sped off. They got on the highway and I realized they were heading the opposite way from my home. I asked them if they could drop me off at my house. I hoped that my wife was either there or heading there. Somehow I ended up at my in-laws place. My mother-in-law and father-in-law (both who have ped in the last few years but I didn't remember that in my dream) were there as well as several members of her extended family ( all still alive). Shortly after I arrived my wife entered through front door. I hugged her and began talking about or ordeal but she shot me a look telling me she didn't want to discuss it in front of her parents as to not worry them. I wanted to go home immediately but she wanted to stay for a while to not appear rude. I woke up shortly after.