beefing up

The U.S. campaign against ISIS leans on two pillars: conducting airstrikes, and beefing up local forces.

Once you begin to pick up on these things, the preposterousness of “beefing up security” becomes worryingly self-evident.

Others have focused on beefing up new product categories to keep pace with the changing times.

Still, rebel leaders insist the city is beefing up its defenses covertly.