This document outlines a draft solicitation for the Mobility Enterprise Services - Classified (MES-C) federal contract opportunity. The Defense Information Systems Agency (DISA)/Defense Information Technology Contracting Organization (DITCO) is seeking industry feedback on a proposed single award indefinite delivery/indefinite quantity contract to support the Department of Defense Mobility Classified Capability program. The contract would provide Commercial Solutions for Classified approved mobile devices with access to the classified Department of Defense Information Network and commercial information services at the Secret and Top Secret levels. The Mobility Program Office requires compliance with Commercial Solutions for Classified Programs in an open platform solution. The system must include an Enterprise Mobility Management suite, network Gateways, Tier III service support, commercial mobile devices for classified voice and data services, and an identity management system. Feedback on the draft solicitation is encouraged by October 26, 2018. A final solicitation is anticipated for the second quarter of Fiscal Year 2019, with an award execution planned for the third quarter of 2019. The contract would have a one-year base period and four one-year option periods.