The NFL rejected the Dallas Cowboys petition to wear the Arm in Arm helmet decals in the preseason.

The league had already vetoed the team wearing them in regular season but it added the preseason to the ban as well, vice president Stephen Jones said Wednesday.

The Cowboys unveiled the decal during a ceremony with Dallas city and police officials on the first day of training camp as a sign of unity and solidarity following the tragic shootings of five police officers last month.

Jones said the team respects the league’s decision and its strict uniform policies.

Dallas Police released the following statement on the matter Thursday:

We appreciate the support of the Cowboys organization and its players. Their concern for the families of our fallen officers, the Dallas Police Department, and the City of Dallas is what matters most, and we know that support will continue for the immediate and long term future.

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