What is a GACO?

I've never heard it either.  Who used it and in what context?

I can find four acronyms via Google. None seem especially relevant to Federal contracting

There is a Government Agency Coordination Office (GACO) that sponsors a series of FAR seminars.

Believe it or not, there is another procurement related GACO.  It's from the Corps of Engineers.  Let's see if Joel is around.

Quote

. . . an employee from the Army Corps’ Los Angeles District Office, served as the Geographical Administrative Contracting Officer, TR 370 . . . .

MW Builders, Inc.  p. 5.

On 10/22/2017 at 7:38 PM, bob7947 said:

Believe it or not, there is another procurement related GACO.  It's from the Corps of Engineers.  Let's see if Joel is around.

Not familiar with that term but that geographical area of responsibility is pretty broad.

I know someone that works at USACE.  That person also has not heard of the term.

I would not rule out the possibility that the Court discovered the title out of thin air, since I could not find it in the USACE Instruction.