What are the brown things all around the White House?

Just a quiet bike ride today as nothing, and I do mean nothing is going on in Washington D.C. But still we go looking for something, with a nice ride through Georgetown, the Lincoln Memorial and the Washington Monument before heading over to the White House where we notice some mysterious brown tarps covering something. I think it’s some sort of radio system, but not sure because it’s covered in a brown tarp. And there’s not just one--they are all around the White House. Wonder what it is? Show not Tell. My kid’s FORTNITE Creator Code is : DYFTLOL —————— PenguinSix is an apolitical guy in a political town who likes to walk a lot. He has hiked over 17,000 miles (27,000kms) in the past six years and is still walking today. He is an American expat who spent the last decade in Hong Kong with his family and is now back in Washington DC, continuing his daily ritual of taking very long hikes around the city catching the sights and sounds of the city while live streaming to share with others. History, culture, life as an expat (with reverse culture shock), and the pitiful Chinese food in Washington DC are regular topics of discussion. Feel free to follow him on other social media accounts such as: Camera 1: DJI Osmo Pocket 2 — (used when walking) Camera 2: iPhone 14 Pro (used when stopping quickly and filming something) Camera 3: Sony A7IV -- (used for long-distance shots) Big Lens: Sony 100-400mm — Camera 4: iPhone 13 Pro -- (backup camera) Camera 5 360 Camera: Insta360x3 -- (360 VR camera) iPhone Zoom Lens: Apexel 36x iPhone Telephoto Lens - Shoes: ASCIS Gel Kayano 29 Tracker: Fitbit Charge 4 Winter Jacket: Rothco US Army M-65 Field Jacket. Barbour Sapper: Miles I walk per day: Stay at home day: 3-4 miles Normal day: 4-7 miles Good hike day: 7-10 miles Best day: 25 miles Twitter @penguinsix Instagram @penguinsix Facebook - PenguinSix Twitch - @ThePenguinsix