What are bomb dreams about?

Recently over the past couple months, I've had a dream when I guess the sun(maybe moon) kind of explodes? I've had this dream atleast 3 times, it's always the same type of story? It's starts out either me knowing what's going to happen and trying to tell others or i know what's about to happen and I watch.
Dream 3:
I find out a volcano is about to erupt, I panic trying to convince everyone to leave but everyone says "there's no time" some girl after that had a brain injury and some helicopter came down and only took her. It obviously angered me but then I got distracted by a large boom sound (the volcano has erupted as I'm assuming). We all hid in a hospital,then I wake up in a home, it's night and I can see the volcano has started to erupt. I see the sun(maybe moon but the sky was gray full of ash) and it moves near my home and it was preparing to explode, it make like a black hole with white things circling it. After that the black hole thing moved away from the white lines, and then lowers itself and explodes like a nuke or a bomb,but it didn't affect me. It just scared me to the point I was trying to escape from something, someone,maybe nothing even. After that a giant futuristic robot was taking people who survived and after that kinda of a blur. A part of me feels like the girl is imposter in some way.
(Sorry for that bad english)

So this one genuinely had me a little sick. Very detailed and realistic from my point of view.

I dreamt I was working in surgery in ER. A lil kid about 7, who's apparently been tortured by extremists is sent in. A concurrent terror attack is happening, lots of frantic rushing. Bodies coming in. Can't process it all.

Looks like amateur surgeon has been experimenting on the kid. Poorly made stitches on his abdomen. Everyone already shocked by the depravity. As the chest cavity is opened, to perform heart surgery, a nurse lets out a horrendous shriek. It seems to last for ages, such is the fear in that scream. As the rib cage is opened a grenade is revealed and detonates in the surgery lab. Killing everyone present. They'd used a child as a trojan horse bomb.

Woke up instantly at the moment of detonation with pretty much PTSD. Horrifying.

It was night time and there was a war in the sky and fighter planes were trying to stop what was happening.

I just had a dream that as a young boy I recieved my little cat.

We went through adventures and hardships together as I grew. I scrimpted and saved what little money I had to buy him food, I cried when he accidentally got out and I stayed awake all night until he came back.

One day my acquaintance brought his dog to my home, the dog was not friendly and bit me and harrassed me and my little cat defended me, getting bitten so I wouldn't have to.

As I grew more, we became inseparable. When my mother and father died he was there for me and kept me company in my bed on those lonely nights. When I turned 18 I was drafted for the war.

In my dream I was walking down a hallway that showed the passage of time. I saw pain and suffering, death and betrayal, I heard bombs and gunfire, I saw children orphaned and parents lose their children and heard the hateful screams of my general telling me to shoot more and to be a man.

When I looked down to my side my little cat was right there with me.

I kept walking and eventually the wars ended. Now I was in my late 20's dragging myself down the hallway, I saw offices and linoleum floors, cubicles and bleary eyed, tired men in suits. I saw my hateful general, now my boss, screaming and spitting telling me to take more clients, take more calls, and work later.

When I looked down to my side my little cat was right there with me.

Now I was in my 40's sitting in my new office. My boss had called me and asked if I had met with the clients yet. I looked at the clock and saw that I was 20 min late, I bolted from my office and before I got to The door my boss stopped me. I was disheveled, my hair was a mess, my shirt was unbuttoned, my eyes were red and my cheeks were stained with tears. He asked me what was wrong with me. I sniffed, wiped my eyes, and clumsily buttoned my shirt with the wrong buttons as I slowly began to cry.

"I'm sorry sir, my little cat just died and I need a moment to collect myself."

"Ha! Are you crying over a stupid cat? You always were useless, in the war and now at this."

He slapped me with those last words. I balled my fists as I stared into his eyes and screamed:

"You bastard. That cat was my life, he was my mother and father, he was my comfort during the war, he was my only source of love while working at this company. He was my best friend and brother, and I think I'd rather join him than work for you one more day. Why don't you just kill me now."

I was now outside in the freezing snow, tall apartment buildings lined the streets and I could see a full moon above me. In front of me, my boss held his old war pistol. He said:

"I knew you were always useless"

as he pulled the trigger. I felt the bullet rip through my chest and I fell. I heard his crunching footsteps fade away in the snow as I lay on my back watching the moon, the blood pouring from my chest.

Everything slowly grew colder, darker, and the last thing I felt was the soft fur of my little cat rubbing against my face and his little meow, before everything faded away.

I've never had a more emotional dream. I woke up crying. I'm still crying. I have a cat that lives with my ex because my mom doesn't like cats. It was the same cat. I got him as a kitten. I miss him.

Last night I dreamt that I was in this random house talking with someone, then all of the sudden everything went this unsettling orange hue and deafeningly and nauseatingly quiet.

There was an awful eerie crashing sound, the kind that sounds like the aftermath of a bomb dropping or something, that low rumble.

Suddenly no one could breathe like fish out of water, and I knew that the world was ending and felt the most gut-wrenching fear and panic. I started falling through the floor looking up at my mother screaming down at me. I knew I was about to die.

I woke up absolutely stunned. I was too afraid to even turn my lamp on. I felt like a child after a bad dream. I couldn’t shake that feeling of knowing it was all of the sudden the apocalypse.

I can’t stop thinking about this dream and I can still feel that fear - does anyone possibly have any thoughts? (I’m 26f if that helps anything!)