Retired Australian swimmer and Olympic gold medalist Grant Hackett puts his skills and strength to the test while he rolls up a ramp to enter a public bus in a wheelchair, in Sydney, Australia, Monday, Nov. 9, 2009. Hackett and other Australian personalities traded walking for wheelchairs to experience the life of a paraplegic as part of spinal awareness week. AP Photo logo AP Photo 1 week ago

Retired Australian swimmer and Olympic gold medalist Grant Hackett puts his skills and strength to the test while he rolls up a ramp to enter a public bus in a wheelchair, in Sydney, Australia, Monday, Nov. 9, 2009. Hackett and other Australian personalities traded walking for wheelchairs to experience the life of a paraplegic as part of spinal awareness week.