From the notice

The U.S. Army Engineer Research and Development Center (ERDC) engages in research that addresses some of the world’s toughest challenges in Military Engineering (ME) and Engineered Resilient Systems (ERS). As a result, ERDC is requesting prototype concept white papers in response to this Broad Other Transaction Authority Announcement (BOTAA). This announcement is continuously open; white papers may be submitted and will be evaluated for the general requirements of this BOTAA at any time throughout the year. The availability of funds may limit the ability of the U.S. Government to make awards in specific areas, nevertheless white papers are sought under this BOTAA. This BOTAA is considered a compettive process. White papers will be evaluated against the criteria in this announcement without regard to other submissions under this announcement. Please visit ERDCWERX for more information and how to submit a white paper. [link]