Over the 16 years since the Boston Celtics last won an NBA title, the team has worked out under a stark visual reminder of their goal to return to the winner's circle.

Choose from Blank Banners stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else.

Blank Sky Banner HD1080 HD stock video Description Red and white Cessna 152 towing a blank sky banner across a blue sky - write your own message. Please note that the banner waves in the wind, so your ...