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Marine Corps emergency alert system is switching from AtHoc to Alert!

MARADMIN 062/26·February 26, 2026·2 min read·Official source
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The Marine Corps is replacing AtHoc, the legacy emergency mass notification system, with a new enterprise-wide system called Alert!. The transition is directed by Marine Corps Installations Command (MCICOM) and must be complete no later than Q3 FY26. AtHoc stays up until Alert! is fully deployed at each installation, so there is no gap in coverage. This MARADMIN supersedes MARADMIN 492/22.

★ Affects all reservists: If your normal place of duty is on a Marine Corps installation, you are required to enroll in Alert! and update your contact info every 90 days.

Who it affects

The enrollment requirement applies to the "primary population": DOD military, civilians, and contractors whose normal place of duty is on a Marine Corps installation or in a Marine Corps facility. That means any reservist who drills at or works out of an installation counts.

Family members, guests, and visitors are not required to enroll but are strongly encouraged to do so.

For most reserve Marines drilling at a Reserve Support Activity or other installation, this is relevant at drill. If you are an IMA or otherwise regularly assigned to an active-component installation, it applies to your daily work environment.

What you need to do

  1. Enroll in Alert! using the PC client in your workstation system tray, or by logging into dod.alert.mil.
  2. Update your contact info (including after-hours contact info) every 90 days after initial enrollment.
  3. If you are an operator or administrator, complete Alert! user training before you are given system access. Training is run by TACOM and is available on a recurring schedule (see Key Dates). Contact the TACOM training team for the link: usarmy.detroit.devcom-gvsc.mbx.em2p-help-desk@army.mil or (866) 515-0551.
  4. Integrate Alert! enrollment into your unit's check-in and check-out procedures.

For most drilling reservists, the action is simple: enroll at dod.alert.mil and keep your contact info current.

Key dates

  • NLT Q3 FY26: Alert! fully deployed across Marine Corps installations. AtHoc remains active until then.
  • NLT 30 working days from 24 Feb 2026: MWNS administrators must be appointed in writing (unit leadership action, not individual Marines).
  • Every 90 days: All primary population members must re-verify and update their Alert! contact information.

Operator/admin training schedule (recurring):

  • Every Wednesday at 1300 ET
  • First Wednesday of each month at 0800 ET and 1800 ET
  • Third Wednesday of each month at 0800 ET and 2000 ET

The official version

Full guidance is in MARADMIN 062/26. This message supersedes MARADMIN 492/22.

POC for questions: George Berger, MCICOM G-3 EM Branch Head, george.berger@usmc.mil, (571) 256-7091.

This is written by a reservist, for reservists. It is not an official publication of HQMC or MARFORRES. Always verify guidance with your command or unit S-1 before acting on any article or summary.

Resources & references

The documents this bulletin points to, with a plain-English note on why each matters. Links marked CAC required need a government login.

  • DOW Public Safety Communications Capability directive (DOWD 8422.01E)Reference

    This directive promotes a standardized and resilient approach to emergency alerts, warnings, and coordination systems. It underpins the policy foundation for the Alert! migration described in this MARADMIN.

  • DOW Emergency Management Program instruction (DOWI 6055.17)Reference

    This instruction directs DOW components to ensure timely warning and notification for personnel and property. It provides the foundational framework for emergency management programs and mass notification systems across the Department.

  • Marine Corps Emergency Management Policy order (MCO 3440.10)Reference

    This order integrates emergency management into the Marine Corps Mission Assurance Framework and requires commanders to maintain effective mass warning and notification systems. Commanders need to understand their obligations under it during the Alert! transition.

  • Marine Corps Mass Warning and Notification Registration and Enrollment (MARADMIN 492/22)MARADMIN

    This is the prior MARADMIN that governed mass warning and notification registration requirements for all Marine Corps personnel. The current MARADMIN 062/26 supersedes it, so reservists who relied on 492/22 should note it is no longer the governing guidance.

  • Multi-Service Tactics, Techniques, and Procedures for Emergency Management (MCTP 10-10G)Reference

    This publication provides multi-service TTPs for coordination, response, and recovery phases of emergency management operations. It gives the broader operational context within which the Alert! notification system will be used.

  • MCICOM Mass Warning Notification System Transition MemoReference

    This memo directed the transition from the legacy AtHoc system to Alert!. It is the document that formally initiated the migration this MARADMIN implements.

  • Enterprise Architecture Requirements for the DOD Emergency Mass Warning and Notification System MemoReference

    This memo defines the enterprise architecture standards and cybersecurity requirements for the DOW emergency mass warning and notification system. It sets the technical and security standards that Alert! must meet.

  • Marine Corps Mass Notification System Concept of Operations (CONOPS)Reference

    This document defines the operational purpose, structure, and performance expectations for the Marine Corps Mass Notification System. It is the authoritative reference for understanding how Alert! is intended to function across the enterprise.

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