Please educate this oldMan:
Why is it illegal to have firearm & ammo secured in your vehicle, parked near the Capital? I wouldn't call 300 block of NJ Ave, Federal Property, even if Federal property, why is it illegal?
https://wtop.com/dc/2018/08/police-say-man-who-had-weapons-ammo-in-vehicle-near-capitol-arrested/
No one can legally have a firearm or ammo in their car unless a resident of DC or driving through DC to a range or hunting trip. Some 22 cartridges in your glove box can land you in jail. Try looking at the laws for Manhattan.