The Ice Control for cold Environments (ICE) program BAA was solicited on August 15, 2022, for the purpose of seeking to develop solutions for extreme cold weather DoW operational challenges by discove... The Ice Control for cold Environments (ICE) program BAA was solicited on August 15, 2022, for the purpose of seeking to develop solutions for extreme cold weather DoW operational challenges by discovering and optimizing biologically sourced or inspired molecules to enable tuned inhibition or nucleation of ice crystallization, propagation, and adhesion. The ICE BAA was solicited for Phase I and Phase II with a notional Phase III that was to be solicited at a later date. This justification provides the rationale for awarding a sole-source modification to the current Phase II contractor, to continue this work into Phase III under the authority of FAR 6.302-1, "Only One Responsible Source and No Other Supplies or Services Will Satisfy Agency Requirements."