Family and friends are desperately searching for an 87-year-old man from eastern Oklahoma who went missing over the weekend during a yearly hunting trip to Colorado.Alvie Webb, a former teacher and principal from Muldrow, went missing Saturday morning. A close family friend describe him as "sharp as a tack.""Very emotional and still am. Shocked and disbelief," Karen Wilson said. "Nothing. There's been nothing."Each year, Webb and his son, his grandson and a group of men go on a hunting trip in Dolores, Colorado. Wilson told KOCO 5 that Webb was dropped off Saturday morning at his hunting spot. "They told him, said, 'Now we'll pick you up at the bottom of the hill, on the road around 10 o'clock,'" she said.After some time passed, Wilson said Webb's son went to go pick him up at the bottom of the hill. Webb wasn't there, so the son waited for his father for a little while, but "Papaw didn't show up." "He started looking for him, and he went up the trail and he wasn't there," Wilson said. "Went down the trail and he wasn't there. So, he realized he needed help, and they started searching and when they didn't find him, they called search and rescue immediately."Wilson's husband flew to Colorado to join the search party."It has been a continuous search party since then, looking for him on this mountain," Wilson said.The search and rescue team, bloodhounds and black hawk helicopters still have not found Webb days after he went missing."He's very sharp and, if he was in trouble, he would've known to fire a shot to let them know 'I'm in trouble,'" Wilson said.Friends and family of Webb said the 87-year-old man does not have any disabilities."We have no idea what has happened to him or where he is at, but we desperately need the public's help in searching for him," Wilson said.On Sunday, the conditions in the search area fell to 18 degrees.