Zac Vawter, a 31-year-old software engineer from Seattle Washington, climbs 103 floors to the top of the Willis Tower using the worlds first neural-controlled Bionic leg in Chicago, as Physical therapist aide Suzanne Finucane (L) looks on November 4, 2012. According to the Rehabilitation Institute of Chicago, their Center for Bionic Medicine has worked to develop technology that allows amputees like Vawter to better control prosthetics with their own throughs. REUTERS/John Gress

Bionic Man

Many of us would complain that it’s a burden to ascend three floors, but for Zac Vawter, climbing to the third floor of the Willis Tower today was an accomplishment and making it to the 103rd floor was historic.