- HQ, Corps of Engineers (http://www.usace.army.mil/Pages/default.aspx) - Small Business Administration: (http://www.sbaonline.sba.gov/) - DoD SADBU: (http://www.acq.osd.mil/osbp/) - Federal Business Opportunities: (https://www.fbo.gov/)
- DUN and Bradstreet (DUNS): http://www.dnb.com/
- Open Solicitations