CBP (Customs and Border Protection) shoots two in Portland, OR

I just skimmed this 6-page PDF, but it seems to answer the pending question (what were they doing there?):

MEMORANDUM OF AGREEMENT between U.S. DEPARTMENT OF HOMELAND SECURITY, U.S. IMMIGRATION AND CUSTOMS ENFORCEMENT, ENFORCEMENT AND REMOVAL OPERATIONS and U.S. DEPARTMENT OF HOMELAND SECURITY, U.S. CUSTOMS AND BORDER PROTECTION

The purpose of this MOA is to document approval of, and terms and conditions for, the detail of Border Patrol Agents (BPAs) and Customs and Border Protection Officers (CBPOs) to ERO field offices, to enhance ERO Criminal Alien Program teams, Fugitive Operation teams, and/or Alternatives to Detention teams, at the discretion of the Field Office Directors.