The Biden administration in February launched a review of the U.S. military’s global presence to ensure it “is correctly sized and supports strategy.”

That review, set to finish by mid-year, comes as the administration balances ongoing military obligations with its focus on China as “the pacing challenge.”

The result may be a reduction of the sprawling network of U.S. bases overseas, which activists, lawmakers, and even the U.S.’s top military officer say is warranted.

The Pentagon operates about 800 such bases, from outposts with a few dozen troops to massive hubs housing thousands of personnel and their families.