"Prepare yourself, you know it's a must"
Norman Greenbaum ~ Spirit In The Sky
https://www.youtube.com/watch?v=AZQxH_8raCI
this dream seems a fairly potent portent. there's an unmistakable recursive
element which suggests that you've witnessed nearly identical circumstances
on several occasions; you've seen it all before.
photographs are like "memory triggers", and for you to be accessing them at
this time may be an effort of your subconscious to urge your conscious mind
into preparation for some 'plan of action' you've had on standby, waiting for
the cue.
i'm imagining the "spirits in the sky" to represent the arrival of divine spiritual
intelligence(s), which have not quite entered into physical manifestation yet.
it could be that you possess the means to usher them into union with this world.