Warhammer00 said:
Heroes do not count as units according to the rules so yes, they can be transported for free. So you can transport any 2 unit types ( Titans included!) as well as any number of heroes in the same move.
Drop pods do trigger defence lasers according to pg 36 of the rulebook under Defence Lasers. Not sure whether Horus' special ability triggers it though.
Heroes don'r trigger Defense Lasers. Maybe it'll be better to not transport 'em?
HtH
L