The Navy said Friday it has grounded an aircrew over “wholly unacceptable” behavior after aviators drew a penis in the sky with jet exhaust over Washington state on Thursday.

"The Navy apologizes to anyone who was offended by this unacceptable action," according to a statement from Naval Air Station Whidbey Island. "The Officers and Sailors of the United States Navy are professionals, held to the highest standards, while serving our nation with pride around world. The actions of this aircrew were wholly unacceptable and antithetical to Navy core values. We have grounded the aircrew and are conducting a thorough investigation - and we will hold those responsible accountable for their actions.

"The Navy apologizes for this irresponsible and immature act."

Residents took note of the sky writing on Thursday and posted pictures to social media.

The Navy statement, which referred to "a condensed air trail resembling an obscene image to observers on the ground," said the aviators were flying an EA-18G Growler assigned to Electronic Attack Squadron 130, which are known as the "Zappers."

"An investigation into this flight will be conducted and if appropriate, the aviator(s) responsible will be held accountable," the statement said.

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