Here's some fun.

585 has all the prime factors of the number 9

585 looks a hell of a lot like 5 : 5 with the dots.

Q Post 585 talks about an Adm R.

TRUST Adm R. He played the game to remain in control. Q

Short of it being for an Adam R, Here are some possible people Q could be referring to:

Admiral Charles A. Richard

Richard's staff assignments include service as the executive assistant and naval aide to the Under Secretary of the Navy; chief of staff, Submarine Force Atlantic; and command of Submarine Squadron 17 in Bangor, Washington.

He didn't become Admiral until 2019, while the Q post is in 2018, so this is unlikely but the 17 is fun.

Admiral Charles W. Ray

Not much on him that connects to Q.

Admiral Robert P. Burke

Burke assumed his current role as the commander of Allied Joint Force Command located in Naples, Italy in July 2020. In this capacity, he directs a combined NATO staff responsible for planning, preparing and conducting military operations throughout the Supreme Allied Commander Europe’s area of responsibility

He fits the bill for being a NATO headpiece. If the Q post is accurate, he may be a necessary asset coming up soon.

There may be more, still looking...

Edit:

I think this is the guy:

Michael S. Rogers

...former United States Navy admiral who served as the second commander of the United States Cyber Command (USCYBERCOM). He concurrently served as the 17th director of the National Security Agency (NSA) and as chief of the Central Security Service (CSS) from April 3, 2014.