This justification provides the rationale for contracting by other than full and open competition to extend contract number 80KSC023DA010 NASA/KSC Sole Source Supply of Liquid Helium (LHe) and LHe Pum... This justification provides the rationale for contracting by other than full and open competition to extend contract number 80KSC023DA010 NASA/KSC Sole Source Supply of Liquid Helium (LHe) and LHe Pump Lease for an additional five years to October 31, 2032, with the addition of five one-year option periods.