Chuck,
The spring brood has, as usual, been abundant here in the mountains of eastern TN and southwest VA. The little light-colored spring ones are always the biggest flight, with few of the darker, longer-tailed 2nd brood showing themselves. And the late summer 3rd brood is the least common of all, sadly. They're big and impressive, a lot like the FL specimens in your photo.
I generally take the spring ones at mud puddles (not a lot of flowers out when they're freshly flying), but the summer and late summer ones are usually seen at milkweed, buddleia, zinnias, etc. A milkweed along a dirt road hosting S. diana and E. marcellus together is a pretty sight!
jh