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Preseason storylines: Dallas Cowboys
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The Dallas Cowboys asked the NFL if the team could wear decals honoring the fallen members of the Dallas Police Department and the NFL, unsurprisingly, said no.
When training camp opened in Oxnard, Calif., earlier this offseason, the Cowboys unveiled "Arm in Arm" helmet decals, designed to pay tribute to the men who lost their lives during the downtown Dallas shooting in July, while also symbolically representing the Cowboys support of the community.