Six firefighters at a D.C. Fire station in the Trinidad neighborhood are back at work after a brief scare earlier this week in which their entire shift fell ill. The firefighters, who are based at Engine 10 at 1342 Florida Avenue NE, became sick Wednesday afternoon due to an unknown illness.

The firefighters had responded earlier in the day to a scene at a drug lab and complained of symptoms related to exposure to hazardous materials. But after spending some time at the D.C. Fire and EMS department clinic, six of the eight firefighters who were sick are cleared for duty again, NBC4 reports. (The other two are still out on sick leave.)

Beside getting some rest and some medical treatment, it’s possible that the six firefighters’ recovery was also encouraged by the People for the Ethical Treatment of Animals, which yesterday dispatched a pair of its “Lettuce Ladies” to deliver some vegan comfort food to Engine 10 as the firefighters returned to work. Rather than have the firefighters convalesce with savory stuff like firehouse chili, PETA staffers wearing nothing but “strategically placed lettuce leaves” provided a chicken-flavored noodle soup prepared by the vegetarian restaurant Café Green. The soup was made with a broth of Chick’n, a meatless poultry substitute manufactured by Morningstar Farms.

“Since vegan food is loaded with fiber and has none of the animal fat or cholesterol found in meat and dairy products, it’s a great way to keep in top firefighting condition,” Leila Sleiman, one of the Lettuce Ladies, said in a PETA press release.

That could come in handy. Engine 10, citing its reputations as the busiest station in D.C. as well as the most worked single-piece engine company in the United States, nicknames itself the “House of Pain.”