Four months into the coronavirus pandemic and with more than 134,000 Americans dead, President Donald Trump was seen in a face mask as he visited Walter Reed National Military Medical Center Saturday.

The fact that masks are effective in curbing the spread of the highly transmissible virus has been known for some time. The Centers for Disease Control and Prevention in early April began recommending that people wear them when they cannot maintain social distance. The agency even released a helpful guide to show you how to make one .

Meanwhile, pressure has mounted for Trump to set a good example by wearing a mask for the cameras because of skyrocketing case counts in much of the country. Until today, he resisted the idea. Trump was required to put on a mask during a visit to a Ford plant in May, but he made a point to take it off right away.

I didnt want to give the press the pleasure of seeing it, Trump said at the time . (A grainy photo leaked out anyway.)

He began to change his tone in late June, saying he had no problem with masks and was actually a fan of them. On July 1, Trump claimed that he liked the way he looked in a mask, believing he resembled the Lone Ranger.

But at the few rallies and speeches Trump has held since the crisis started, crowds appeared to take their cues from the president leaving their masks at home.

Now Trump has taken one baby step to encourage widespread mask usage in the deadly pandemic. Behold: