If Trask is shooting innocents, his men won't stay with him for very long. It's one thing to fire on a group of unarmed people who are rushing at you with fire in their eyes and a yowl in their throat. It's another thing altogether to shoot hostages who are merely sitting against a wall. If Trask is willing to do that, then he's more than just a little nuts, and his subordinates already don't like it.
If Lois is willing to tip her super-hand, she could jump up and run to the box and grab it and smash through the wall and run away and let Superman clean up the mess. But that's a last resort, and even that brief exposure to kryptonite will make her leery of trying it.
You're building to a dynamite ending, full of dragons and heroes and undaunted courage. I look forward to the next part, knowing that Lois will do the right thing at the right time.
