Water delivery man Marco Parea knew something was not right as he tapped on the entrance of 88-year-old Barbara White-Minischi's apartment. "I kept knocking and she did not answer," the Palomar Mountain Water employee told CBS affiliate KFMB-TV. He usually announces his delivery by shouting, "This is Marco," and she shoots back, "Polo!" But one day, Parea was alarmed when he got no reply to his appearance at the elderly woman's San Diego home. InsideEdition.com's Leigh Scheps has more.