Science / Tech News Last Update on July 02, 2015 07:08 GMT IN THE NEWS: MAINE CREWS USE DRONE TO RESCUE 2 BOYS FROM RAGING RIVER MECHANIC FALLS, Maine (AP) -- Officials in Maine have used a drone to deliver a lifejacket to a boy stranded on a rock in the middle of a raging river. Two boys needed rescuing after their tube overturned in the Little Androscoggin River. Only one was wearing a lifejacket. Auburn Fire Chief Frank Roma tells WGME (http://bit.ly/1U8y2hC ) that before attempting a rescue, crews wanted to get a lifejacket to the boy without one. Roma said they used a drone to get a line to the boys so they could pull the lifejacket to them. With both boys safely in lifejackets, two rescuers paddled out to them. They rescued the younger boy first, then came back for the teenager. Both boys were uninjured. IN THE NEWS: AGENTS CHARGED-SILK ROAD SAN FRANCISCO (AP) -- A former undercover federal agent pleaded guilty to extortion and related charges after acknowledging he channeled more than $700,000 in digital currency from the Silk Road online drug bazaar he was investigating. In addition to extortion, Carl Force also pleaded guilty Wednesday to money laundering and obstruction of justice. The 46-year-old Force was tasked with masquerading as a drug dealer and establishing communications with Silk Road operator Ross Ulbricht, who was recently sentenced to life in prison. After he infiltrated the website, Force sold Ulbricht information about the Silk Road investigation. Force faces a maximum 20 years in prison when sentenced in October. Former Secret Service agent Shaun Bridges earlier also agreed to plead guilty to theft charges stemming from his separate involvement in siphoning funds from Silk Road.