On August 18, 2017, Join Region Marianas announced that the military will conduct training in waters surrounding Guam (Warning Area 517 (W-517)) during the following dates and times:
– Aug. 22 from 8 a.m. to 11 p.m.
– Aug. 23 from 5-7 p.m.
– Aug. 24 and 26 from 9 a.m. to 6 p.m.
– Aug. 28 from 11 a.m. to 7 p.m.
– Aug. 30 from noon to 6 p.m.

The military will also conduct training in waters around Guam within a five-mile nautical radius of the following coordinates 10° 30″ 00’N/144° 40″00’E, 10° 30″ 00’N/145° 20″00’E, 09° 50″ 00’N/145° 20″00’E, 09° 50″ 00’N/144° 40″00’E, and 10° 30″ 00’N/144° 40″00’E during the following dates and times:
– Aug. 23 from 9 a.m. to 6 p.m.
– Aug. 26 from 6 a.m. to 6 p.m.

For more information, see the release from JRM here:
17-069 Military to Conduct Training at W-517, Waters Surrounding Guam