Marine Corps aircraft units will be dropping 500 pound high explosive bombs in the Zulu impact area from noon to 11 p.m., Wednesday and Thursday.

Depending on atmospheric conditions, the sound of the explosions may be amplified and heard up to 50 miles away.

Those requesting additional information can direct their calls to the Operations and Training Division at (760) 725-0357.

For future inquiries regarding increased noise levels, please refer to the weekly noise advisories posted on the Marine Corps Base Camp Pendleton Web site at http://www.pendleton.marines.mil/About/BaseInformation/NoiseAdvisory.aspx.

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