PIEE Submission. Offerors SHALL deliver proposal through the Solicitation Module in Procurement Integrated Environment (PIEE). Offerors are responsible for ensuring PIEE registration and any training ... PIEE Submission. Offerors SHALL deliver proposal through the Solicitation Module in Procurement Integrated Environment (PIEE). Offerors are responsible for ensuring PIEE registration and any training needed is completed prior to anticipated solicitation closing date. See links below:Vendor Registration: https://www.acq.osd.mil/asda/dpc/ce/cap/docs/piee/PIEE_Solicitation_Module_Vendor_Access_Instructions.pdf Solicitation Module Training: https://pieetraining.eb.mil/wbt/xhtml/wbt/sol/index.xhtml