An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Feature Search

GHS/OCD, NBG, and AAFB to Conduct Routine Testing of Advanced Warning Systems Dec. 5

  • Published
  • By Guam Homeland Security / Office of Civil Defense

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD), U.S. Naval Base Guam (NBG), and Andersen Air Force Base (AAFB) will conduct routine testing of the vital communication and advance warning system sirens, respectively, on Tuesday, December 5 starting at 3 p.m.

GHS/OCD will test the All Hazards Alert Warning System (AHAWS) from thirteen (13) locations in conjunction with NBG and AAFB monthly routine testing of the "Giant Voice (GV)."

Residents, visitors and motorists surrounding the AHAWS sirens and GV speakers can expect to hear pre-scripted voice messaging announcing the start and end of the test, and ten-seconds of the "Alert" tone, which can be heard here:

Future tests of the AHAWS sirens will now be conducted on a monthly basis, in conjunction with NBG and AAFB, and will typically fall on the first Tuesday of each month.

The following are a list of AHAWS siren sites to be tested:

1. GHS/OCD facility, Agana Heights

2. Agat Marina

3. JFK High School

4. Talofofo Elementary School

5. Asan Mayor's Office

6. Pago Bay A-Frame South End

7. Yona Mayor's Office

8. GWA Pump Station, Merizo

9. Ija Agricultural Station, Inarajan

10. Port Authority of Guam

11. Agat Senior Citizen's Center

12. Hotel Nikko Guam

13. Tamuning Mayor’s Office

For more information, contact GHS/OCD Public Information Officer, Jenna G. Blas at (671) 478-0208 or via email at or NBG Public Affairs Officer, Theresa Merto Cepeda at (671) 339-2663 or via email at