Crawler Transporter 2 Trek. NASA public domain image. Kennedy space center.

A close-up view of a section of cleats on one of the tracks that help propel NASA’s upgraded crawler-transporter 2 (CT-2) as the giant vehicle moves along the crawlerway toward the Vehicle Assembly Building (VAB) at NASA Kennedy Space Center in Florida. CT-2 was driven to Launch Pad 39B to test recently completed upgrades and modifications to ensure the vehicle will be ready to support NASA’s journey to Mars. The Ground Systems Development and Operations Program at Kennedy oversaw upgrades to the crawler in the VAB. The crawler will carry the mobile launcher with Orion atop the Space Launch System rocket to Pad 39B for Exploration Mission 1.