What about Continuity of Government provisions (NSPD 51/HSPD-20)?

[Anon-C]

For Immediate Release
Office of the Press Secretary
May 9, 2007

https://fas.org/irp/offdocs/nspd/nspd-51.htm

National Security and Homeland Security Presidential Directive
NATIONAL SECURITY PRESIDENTIAL DIRECTIVE/NSPD 51

HOMELAND SECURITY PRESIDENTIAL DIRECTIVE/HSPD-20

Subject: National Continuity Policy

Purpose

(1) This directive establishes a comprehensive national policy on the continuity of Federal Government structures and operations and a single National Continuity Coordinator responsible for coordinating the development and implementation of Federal continuity policies. This policy establishes "National Essential Functions," prescribes continuity requirements for all executive departments and agencies, and provides guidance for State, local, territorial, and tribal governments, and private sector organizations in order to ensure a comprehensive and integrated national continuity program that will enhance the credibility of our national security posture and enable a more rapid and effective response to and recovery from a national emergency.

...

(b) "Catastrophic Emergency" means any incident, regardless of location, that results in extraordinary levels of mass casualties, damage, or disruption severely affecting the U.S. population, infrastructure, environment, economy, or government functions;

Considering the military nature of this ongoing attack and it's compromising of our presidency; couldn't Continuity of Government meaures be activated hypothetically?

While he's abroad??