d.c. national guard are being activated for security duties. that's triple the number routinely deployed for the holiday. >> we'll have planes going overhead. the best fighter jets in the world and other planes, too. we'll have tanks stationed outside. >> reporter: two tanks and two armored vehicles have been brought to washington. but each tank weighs 60 tons. it's not clear if they can be parked near the 97-year-old lincoln memorial, without damaging the area. there will be a flyover of the f-22 and the f-35, the air force's latest fighter jet. and the plane used as air force one and the new marine one presidential helicopter. the cost for all of this, nobody knows. the republican national committee is distributing reserve tickets for v.i.p. friends and family and members of the military. >> reporter: july 4th is a