As Dan plummeted towards the ground, he thought of a brilliant idea.
He engulfed himself in flames, and as he drew nearer to the ground, pulled the chute. He remained curled in ball form drifting towards the ground. Hopefully, they would think it a weather balloon or something.

"Whats that? Should I shoot it down?"
"No, it might be government property. Let it touch down and we'll go check it out."

He landed just outside the fence, and cut the lines on his chute, quickly leaving the immediate area. He waited for the guards to come inspect the object.
When they did, they stood with there backs to him. He plunged one dagger into the base of each skull, killing them instantly, and soundlessly.

"So it begins." And he went towards the gate.