1. When I cross a street with a target symbol, when I had to activate the specified zones? Or if they do not yet Suspect markers I should not consider them?
2. If my squad on roof, can I use explosives without continuing Flooding and stop on the 2 floor?
3. If I control Zone with target symbol I have to activate these Zones under the symbol on Reorganisation Phase (exp. Zone #28, with Target symbol #26,36)?
1) No. You do not activate Zones when you cross a street : Zones are Activated only when you take Control of an Adjacent Zone at the end of the turn. If there is a Suspect marker, it can be activated as per 12.5.2 and 11.4.2.
2) Yes but if your squad has not suffered any step loss, it must flooding (22.214.171.124).
3) No. Zones #26 and #36 are Adjacents to Zone #28 only for Fire and Street Crossing purposes (see 126.96.36.199).