It could easily be Daniels or Crudup's backpack Franco has on @BigDave- he's come to get them, grabs the gear etc. Or it could be his own (standard gear for a planet descent).
I too think it's unlikely Franco dies early off screen. Perhaps I'm too soft, but I would find it hard to believe that if Daniels' husband is part of the crew and dies right at the start, that she would smile much at all in this movie (see 0:46 in the trailer). That particular brief clip looks like she's possibly in a hanger/outside a shuttle/dropship - I don't think it's in sequence with the next shots of the cockpit.
Information from KW herself indicates there's an evolution in her character 'when she's tested'. I doubt that happens right at the start of the film.
However, the clip at 1:29 in the trailer also suggests that the two people running toward the exploding ship are Daniels and the mystery man (with a cap on his head, and a camera/torch arm extended from the backpack).
I'm also going to put it out there - I think the drop ship is too small (based on outside shots and interior shots at 0:55 in the trailer) for any of the alien 'bursting' scenes we've seen/heard about to occur in. Unless there is another larger ship on the surface at some point, I suspect all the alien action happens on the Covenant. It's hard to see that med bay being in the drop ship shown on the surface. It also stands to reason that there is an incubation/gestation period for any of the alien types, so wonder if the sick/face hugged crew are ferried back to the Covenant, which creates the potential for there to be concurrent 'action' occurring on the surface, as well as hell breaking loose on the Covenant.
I realise people will say 'but the neomorph is shot in the dropship and the dropship blows up'. To me, there could be a couple of alternative scenarios to this - one, that's true, but the neomorph is not the same one we see back bursting in the trailer; two, the neomorph came back down to the planet in a ship (part of the ferry back and forward theory). It is, of course, pure speculation, but as @BigDave has said, very rarely do trailers depict a sequential summary of the plot - they are cut (usually) to engage the viewer, give a sense of what they will see in the movie, without stepping through all the key pieces of the plot.
I'm highly sceptical about the leaked plot. While some parts may be real (through various aspects being leaked) I doubt the authenticity of the early/test cut claim, and suspect it's likely someone has either extrapolated small snippets of real info into a full plot summary, or just speculated and made the whole thing up.
