Disarming Andi (Heartsong Presents)

is book #893 of the Heartsong Presents line.
==Book Description==
Vance Young inherits a missile launch site -- a relic from the cold war buried beneath the plains of North Dakota -- from his great-uncle, a man he never knew. — An astronomy fanatic, Vance needs free access to the night skies, so he doesn’t consider staying in the underground dwelling until he meets the woman responsible for remodeling it into a lavish home.
Upon meeting the late Vance Erickson’s namesake, Andi Nielsen may have just gotten her second chance to discover what her grandfather hid inside the old missile base decades before, when he served as a missileer. Is she prepared to detonate her growing feelings for the new owner in order to find the hidden treasure? When Vance remotely discovers a cybercrime involving his classified software, can he solve the crime and keep the woman he loves safe?
(Description from paperbackswap.com)