I think its expected to wear a mask.Trump was wearing a mask in Walter Reed's hallway as he began his visit.
The president was a latecomer to wearing a mask during the pandemic, which has raged across the U.S. since March and infected more than 3.2 million and killed at least 134,000.
Most prominent Republicans, including Vice President Mike Pence, endorsed wearing masks as the coronavirus gained ground this summer.
Trump, however, has declined to wear a mask at news conferences, coronavirus task force updates, rallies and other public events.
The only time Trump has been known to wear a mask was during a private part of a tour of a Ford plant in Michigan.