Safer than being a target -- escape routes from the center arch
If you are perched atop the center arch, you can become a quick target for grenades, needlers, rockets, whatever... because you don't have any quick escape routes. I've found that it is possible to jump and fall into both front side underground tunnel ramps from this arch and sustain little or no damage. You must land just right on the ramp so as to deflect yourself and break your fall. One of the ramps is just over the side from the top of the arch and the other requires you to run down the arch and jump skillfully out off the arch and into the tunnel. Each time you end up safely within the walls of the underground tunnels and out of the open fire in the map's center.