: The lateral (orbital) velocity must not have been that great. The
: supercarrier (split in two parts) landed on the same mountain top and in
: the vicinity of the Spartan in the re-entry pack. That's the reality of
: what went on. Now we need to explain the dynamics of the forces involved
: to get them both there. :)

I would guess he chose to land near enough of it, as to mask his signature among the debris. Reach's forces seem to me a bit more competent than the ones on Delta Halo.