As part of the pavement maintenance program, The Hartsfield-Jackson International Airport (The busiest airport in the world) engages a contractor to perform the concrete repair and associated work. P2K has been doing these annual spall repairs since 2002. The work includes spall repair, joint and cracks sealing, selective grading, striping improvements, and rubber removal. Most construction occurs within the Security Identification Display Area (SIDA), the airport security area with restricted access. The FAA controls the Aircraft Operations Area (AOA). The main challenge in this project is how each repair has to be executed. Nightly closures on Runways and Taxiways occur from 11:30 p.m. until 6:00 a.m. Within this time frame, damaged areas of the concrete pavement have to be demolished, prepared, re-bar placed, special high-early strength concrete poured back, and the area cleaned and free of debris to allow the landing of the first airplanes at 6:00 a.m. Contract Milestones include Liquidated Damages 100 dollars per minute failure to open Taxiway on time and 500 dollars per minute failure to open Runway on time.