SAN ANTONIO — More than 100 companies descended on the convention center this week in hopes of showing border officials products they believe can be used to carry out homeland security missions.

The Border Security Expo drew 1,100 attendees this year, including employees from 50 federal, state, and local law enforcement agencies. The event’s panels and speeches by senior DHS officials are meant to give the private sector a better grasp of what is needed and how to go about fulfilling those needs. The expo portion gives public officials an in-person chance to test out some of the latest technology and products.