Osama was killed in the first 5 days of the bombing campaign, probably on the first night while night vision technology would still be of added significant value. The U.S. generally knew where Osama was located prior to 9-11, but honed down his local zone of occupation in the 26 days prior to the bombing. Satellites and Predator spy planes were collecting real-time data on the suspected locations of Osama to narrow down the exact location. The Pentagon analyzed the recon photos to narrow the range, then used the bee-hive theory of probable location and confirmation. You can find the most important bee in a hive by finding the vibrant, dense cluster of worker bees surrounding their leader. Even at night, the IR signatures and night vision of the mobile and settled terrorist wanna-bees would create a radiating pattern, with all individuals movement and positions generally pointing to Osamas location.
By waiting 26 days before bombing, a relatively false sense of security would be created for the terrorists. They would have sufficient time, and more importantly, a level of comfort and confidence in them to find Osama and stay near him. The response by terrorist followers to search and find Osama did in effect reveal bin Ladens detailed position. Weeks were needed to finally settle on bin Ladens actual position. Prior to bombing, The CIA confirmed his position with Predator drone aircraft and personnel operatives on the ground.
In the first night-time bombing raids, Osamas entire surrounding Active Zone was thoroughly destroyed all the way out to a miles-wide buffer zone of absolutely no human activity. Bunker busters and conventional bombs fell continually for hours in the Active Zone, laying a continuous encircling carpet of utter destruction from which nothing larger than bacteria could survive. During the bombing runs, heavy jamming of cell phone frequencies made all cell phones and other forms of radio communication used by the terrorists ineffective.
Although nighttime can reveal the positions of explosions, the flash of light lasts only a moment compared with the resulting smoke, which can be seen for 10s of miles and for hours afterwards. By morning, all dense smoke evidence of the nights bombings were not visible for miles beyond the Active Zone and the encircling Perimeter Zone.
Afterwards, for days later, everything that was detected to be moving or radiating energy inside the Active Zone was surgically struck with Apaches. Satellites and drones transmitted IR photos to assure that any body heat signatures were cold within the Active Zone. To create the illusion that the Active Zone was not necessarily Osamas location, strikes were conducted all over parts of Afghanistan as a diversion.
Early on October 11, Bush was notified that the energy gradient in the Active Zone was flat, meaning that no bodies were alive, and no forms of electronic radiation were detected. The carefully constructed press conference speech was drafted and delivered stating that the US would "halt air strikes" if the Taliban would hand over bin Laden.
These concentrated air strikes met all 5 objectives and the last 4 Strategies shown above, and intentionally leave bin Ladens death forever in question. The Active Zone is still maintained under surveillance, and any activity heading toward the Active Zone is stopped. For security and deterrence, several other zones are maintained to mimic the Active Zone.
BTW, if Sabertooth ever gets his sorry ______ over here and posts his Osama Pool, you'll see how much I agree with your theory.(But NOW I'm thinkin' I was off a couple of days?)
I do not believe we have anything in our arsenal short of nuclear weapons that could create the situation you described. In any case, such a killing zone would surely have become public by now, being that the entire country has now been liberated and open to reporters.
Anyway, I certainly hope that OBL is dead by now and that we'll never know for sure. For as you say, as soon as OBL's death is known, it will create a rallying point for future terrorists. Better to have Elvis-like "OBL sightings" for the next 20 years or so. Especially in places where we would like to bomb.