leased equipment that was held over due to delays on the part of the Government or the Government's failure to properly integrate other contractors who then interfered with our contractor's work. Cases out there that say the Government can reduce profit if risk was reduced due to the change. Can use the settlement procedures in FAR Part 49, per FAR 49.002(c) but be advised that this section is really written for terminations – you have to adapt the settlement procedures, probably for terminations for convenience, to the REA. The Government should make sure there is a release of claims (ROC) clause in the REA's contract modification – FAR / DFARS do not have a sample ROC clause. In the context of FAR Part 12 commercial items, the changes clause requires bilateral agreement. A substantial number of federal cases deal with REAs: "It is black letter law that every contract with the Government contains an implied obligation that neither party will do anything to prevent, hinder, or delay performance." Sterling Millwrights, Inc. v. United States, 26 Cl.Ct. 49, 67 (1992) (citing Lewis-Nicholson, Inc. v. United States, 213 Ct.Cl. 192, 550 F.2d 26, 32 (1977)). When Government actions delay contractor performance and increase costs, "the contractor has a claim for damages". (Lewis-Nicholson, 550 F.2d at 26). "A constructive change generally arises where the Government, without more, expressly or impliedly orders the contractor to perform work that is not specified in the contract documents." Lathan, 20 Cl.Ct. at 128 (citing Chris Berg, Inc. v. United States, 197 Ct.Cl. 503, 525, 455 F.2d 1037, 1050 (1972)). Contractors may recover excess costs through an equitable adjustment, however, it "bears the burden of proving liability, causation, and resultant injury." Ralph L. Jones, 33 Fed.Cl. at 331 (citing Wunderlich Contracting Co. v. United States, 173 Ct.Cl. 180, 199, 351 F.2d 956 (1965); Electronic & Missile Facilities, Inc. v. United States, 189 Ct.Cl. 237, 253, 416 F.2d 1345 (1969)). The standard of meeting this burden is high. Before an equitable adjustment will be granted, contractors must demonstrate: (1) increased costs arose from conditions materially different from what the contract documents indicated and that such conditions were reasonably unforeseeable based on all information available to the contractor; and (2) the changes in the requirements caused the increased costs in question. Johns-Manville Corp. v. United States, 12 Cl.Ct. 1, 33 (1987). A contractor must distinguish for the court those delays