Uncle Sarge (Harlequin American Romance, No 876)

the long version

"Kids aren't my specialty." U.S. Air Force Combat Controller Rich Larsen could parachute into danger in a moment's notice. But being besieged by his convalescing sister's two demanding children was an entirely different matter. Well, desperate means called for extreme measures. So the overwhelmed Uncle Sarge sent out an SOS to the pretty lady who had reunited him with his family. Before long, Jennifer Bishop worked a miracle on Rich's adorable wards -- and on his heart. So much so that the rootless loner could almost picture them having a family of their own someday. Trouble was, a love-wary Jennifer had sworn off military men. Good thing Rich never backed away from a challenge!