Head towards the exit like normal except that it's blocked. turn around and run down the hallway towards the gate. The gate is partially open but the pipes are blocking the way. You want to throw your new freeze bombs at the opening of the pipe so it blocks the pipe. Now you can just slide through. Go through the door on the other side to exit the building. Watch events unfold and go to the rescue.
Head west but go slowly so you can see the beams from the sniper rifles. Watch for them around the crash site and then follow them back to the source. There should be two to the right and two to the left. Sneak up on them from behind and take them out before rescuing the reporter. Be careful when taking out either group because the sniping groups can see each other. However, if you are quick, they likely won't have time to get a clear shot. With them out of the way, go talk to the reporter.
How you actually get there is up to you but you are headed for the Southwest corner of the Steel Mill. Be careful because there are guards with sniper rifles all over the place and they only get thicker once you get to the Industrial District. You can go fast or you can go slow and take out all the guards, it's really your choice. Either way, when you get close, Oracle will give you a waypoint directly to where you are going. Outside is a small stalker section. There are two snipers here, one on a really high tower and one on a lower tower. Just make sure you get the high tower sniper and then the low tower sniper.
After that, it's a cakewalk really. Just wait for the enemies to come out of hiding and make use of your baterang and takedowns. They should fall in no time. Make your way inside. Inside, freeze the first guy and then try and take out the other two. It's a pretty simple battle but they do have access to a knife and a shield so watch for those.
