NASA contractor and construction workers watch as a crane lowers the crane toward the floor of the transfer aisle.

Inside the Vehicle Assembly Building, or VAB, at NASA's Kennedy Space Center in Florida, NASA, contractor and construction workers watch as a crane lowers the 175-ton crane toward the floor of the transfer aisle. The crane was turned to make it easier to lower it from Level 16. Upgrades to the crane's 45-year-old controls will be performed in order to improve reliability, precision and safety.

The Ground Systems Development and Operations Program is overseeing upgrades and modifications to the VAB. The crane will be upgraded so that it can support lifting needs for NASA and other exploration vehicles, including the agency's Space Launch System and Orion spacecraft. Photo credit: NASA/Daniel Casper