Amendment 0004 adds a Not-to-Exceed amount for CLINs 0004AA, 1003AA, 2003AA, 3003AA, and 4003AA.Amendment 0003 adds a revised PWS and Questions and Answers.Amendment 0002 changes FAR clause 52.212-1, Instructions to Offerors and FAR clause 52.212-2, Evaluation. See amendment and conformed solicitation.Amendment 0001 adds a revised PWS. Korean Elevator Maintenance/Repair at Kunsan Air Base, Korea. See attached PWS.