Firefighters work at the scene of an explosion in Silver Spring, Montgomery County, Maryland, the United States, on March 3, 2022. Five people are in critical condition after an explosion took down parts of an apartment building in Montgomery County, the U.S. state of Maryland, on Thursday morning. (Xinhua/Liu Jie)
Firefighters work at the scene of an explosion in Silver Spring, Montgomery County, Maryland, the United States, on March 3, 2022. Five people are in critical condition after an explosion took down parts of an apartment building in Montgomery County, the U.S. state of Maryland, on Thursday morning. (Xinhua/Liu Jie)
Firefighters work at the scene of an explosion in Silver Spring, Montgomery County, Maryland, the United States, on March 3, 2022. Five people are in critical condition after an explosion took down parts of an apartment building in Montgomery County, the U.S. state of Maryland, on Thursday morning. (Xinhua/Liu Jie)
Firefighters work at the scene of an explosion in Silver Spring, Montgomery County, Maryland, the United States, on March 3, 2022. Five people are in critical condition after an explosion took down parts of an apartment building in Montgomery County, the U.S. state of Maryland, on Thursday morning. (Xinhua/Liu Jie)
Firefighters work at the scene of an explosion in Silver Spring, Montgomery County, Maryland, the United States, on March 3, 2022. Five people are in critical condition after an explosion took down parts of an apartment building in Montgomery County, the U.S. state of Maryland, on Thursday morning. (Xinhua/Liu Jie)
Firefighters work at the scene of an explosion in Silver Spring, Montgomery County, Maryland, the United States, on March 3, 2022. Five people are in critical condition after an explosion took down parts of an apartment building in Montgomery County, the U.S. state of Maryland, on Thursday morning. (Xinhua/Liu Jie)