Chris
We do know something about how the search was conducted and the key word in Lambrecht's report is "Sibsequent". From that I deduce that prior to the "bird problem" at McKean the search circling was at an altitude of 50 feet and increased to 400 feet at and after McKean, including Gardner. All we can say is that the search did not uncover anything related to the AE/FN disappearance. Unfortunately, we know nothing about what Lambrecht meant by "signs of recent habitation" Sie La Vie, Aci Es La Vida, That's the wAY THE COOKIE CRUMBLES.