If you tune in from time to time and see the egg unattended, you really don't need to worry. As the second and hopefully third egg are laid, Liberty and Justice will spend less and less time off the eggs. It seems they give the first egg or two a little more cooling time to try to get the hatchings to happen a little closer to the same time. Even when the eggs are unattended, at least one of the parents is never too far away from the nest. Be patient, the average incubation is about 35 days. I think last year it was 36 or 37 days before the first egg hatched.
A few people have asked about zooming in. This camera is zoomed out as far as it will go. When the eggs hatch we may zoom in a bit to make it easier to see the little ones for the first few days.