Pre-Solicitation Notice and Pre-Solicitation Meeting/Industry Day announcement for Counter-small Unmanned Aircraft Systems (C-sUAS): The Department of Defense, specifically the Department of the Air Force, is seeking a focused yet flexible, rapid, agile contracting vehicle to support the research, development, prototyping, demonstration, evaluation, and transition of Counter small Unmanned Aircraft System (C-sUAS) capabilities. These capabilities are intended to combat Commercial Off-The-Shelf (COTS) small Unmanned Aircraft Systems (sUAS) used by adversaries in asymmetric warfare against U.S. military personnel and materiel. The government anticipates a single award Indefinite-Delivery, Indefinite-Quantity (ID/IQ) research and development (R&D) contract with Cost-Plus-Fixed-Fee Completion (CPFF/C) Task Orders, an ordering period of seventy-two (72) months, and a maximum ordering amount of approximately $490,000,000. The anticipated deliverables include software, hardware, technical documentation, and technical reports. The North American Industry Classification Systems (NAICS) code for this effort is 541715 with a small business size standard of 1,500 employees based on the Aircraft, Aircraft Engine, and Engine Parts exception. The government also requires that approximately 20% of proposed personnel be TS/SCI cleared and assigned at the time of award, with graduated increases over time. Foreign Allied Participation will be excluded at the prime contractor level. A technical library relating to the subject area of this acquisition will be made available. Interested parties must request access through AFRL/RI personnel. A Draft Request for Proposal (RFP) is anticipated to be released during the 1st quarter of CY 2020. The entire solicitation will be issued on the BETA SAM website at https://beta.sam.gov/. The government will not provide paper copies of the solicitation. All responsible sources may submit a proposal in response to the RFP. Technical questions should be directed to the Contracting Officer's Technical Representative (COTR), Donna Toole at (315) 330-3972, donna.toole.1@us.af.mil. Any contractual questions or questions concerning this Presolicitation Notice should be communicated directly to the Contract Specialist, Matthew Zawisza at (315) 330-4922, matthew.zawisza@us.af.mil, or the Contracting Officer, Terrence Lipinski at (315) 330-4510, terrence.lipinski@us.af.mil. An Ombudsman has been appointed to hear and facilitate the resolution of concerns from offerors, potential offerors, and others for this acquisition. INDUSTRY DAY: AFRL will be conducting an Industry Day for the C-sUAS acquisition on Monday, December 16, 2019, at Griffiss Institute, 725 Daedalian Dr., Rome NY 13441. The purpose of this meeting is to provide interested companies/entities with an overview of the C-sUAS contract and promote an early exchange of information. Interested parties must register by Monday, December 09, 2019, to gain access to the facility.