"Great read rivals Cussler and Riely...Thank you." - reader comment left on author's site. This is "Rescueplan" the 3rd book in the series, so read these other books first: Greyland: D.U.M.B.s (Deep Underground Military Bases) - Book 1 Oceandeep: D.U.M.B.s (Deep Underground Military Bases) - Book 2 In Rescueplan civilian contractor Leon Verdat has been left with no choice but to help a black ops military group battle invading Grey aliens from their top secret D.U.M.B.s (Deep Underground Military Bases) underground and undersea. With the Greys determined to take over Earth and the lives of...