Navy: Service members in "Make Aircrews Great Again" patches during Trump Japan visit may have violated regulations

The Navy is reviewing whether service members violated Defense Department regulations by wearing 'Make Aircrew Great Again' uniform patches during President Trump's visit to their ship in Japan, reports the Associated Press.
Here's a photo of the patch by Vivian Salama, a reporter from the Wall Street Journal.

Airmen onboard the USS WASP wearing patches on their jumpsuits that read “Make Aircrew Great Again.” The patches include an image in the center in the likeness of President Trump. pic.twitter.com/rQKAyrcDte
— Vivian Salama (@vmsalama) May 28, 2019

There's an AP photo of the patch we dare not include here, but go look at it on the AP site. It's red. There's a dude in the middle who looks like a thin, handsome, non-insane version of Trump pointing at you. Pretty dumb.
From the AP story:
The military has uniform dress codes and regulations against partisan political acts while in uniform.
In a brief statement Tuesday, the Navy said only that the matter was under review by Navy leadership to ensure that the wearing of the patches did not violate policy or regulations.
Trump visited the USS Wasp assault ship on Tuesday before returning to Washington from four days in Japan.
Been a bunch of other little stories like this during Trump's tenure, about service members wearing MAGA hats and the like when he visits. It's the little things like this that add up to thorough corruption.