You didn't say anything about your setup - a discone or scantenna mounted nice and high outdoors is a must, although given the weather in western NY this time of the year, that might be a tall order (pun intended). And of course, a milair capable scanner (not everything is...)
Anyway, I'd start by checking out the UHF freqs for the ARTCC centers in your area. They are indexed in the Wiki article below - certainly ZNY would be one, but I would suspect Cleveland might be the other, though I'm not entirely sure of that. Be sure to ignore the FAA listings (very dated) and use whatever follows. If you are using Ohio ARTCC sites, don't ignore the possibility of Ohio flights working over Lake Ontario...
http://wiki.radioreference.com/index.php/ARTCC
I wouldn't also examine the various Ohio websites, and the Pa. Military monitoring Yahoo forum for overflights coming from that area...
http://wiki.radioreference.com/index.php/Milcom_Web_Pages_and_Mailing_Lists
I don't know of any mil bases in Western NY, but perhaps a little digging on this site, plus on NF2G's website might turn up something. A yell on the NY forum might be in order here.
73 Mike