The ballpark is overlooked by the Hilton Hotel and other high rises like the Pandora Building in downtown Baltimore. Conaway said security efforts had previously mostly focused on the Hilton's rooms with balconies and opening windows but that authorities might now have to rethink that approach.
The threat of a gunman opening fire from high up means it can be hard for people below to find cover, but Conaway said the advice about what to do in a shooting remains the same.
"It's still evacuate, shelter and as a last resort you have to defend or protect yourself," he said.
Conaway told board members he had also been in touch with police about security at M&T Bank Stadium for the Ravens season. But he said that stadium is further from tall buildings and better protected by its enclosed bowl design.
In a statement, the Ravens said fan safety is a top priority it works on continuously, "but as recommended to us by security specialists, we do not discuss publicly our security measures."