This notice publishes an approved Justification and Approval for other-than-full-and-open competition. MARSOC has awarded a sole-source IDIQ contract to Threat Tec, LLC for event-driven, episodic training support, including subject matter experts and role players, to be ordered as needed via future task orders. The contract is a companion to a definitive contract for full-time personnel and is intended to prevent a gap in mission-essential training. A redacted approved J&A is attached to the posting.