The first of four public workshops on a re-envisioning of East Hampton Airport will be held tonight at 7. It will be a virtual workshop, held via Zoom video conference, rather than in person at the LTV Media Center in Wainscott, as initially planned. Owing to a significant uptick in the rate of positive Covid-19 tests at the testing sites at the East Hampton Town Hall campus and in Montauk, the town board and other boards and committees have reverted to virtual meetings.