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A statement from @UKYpres on incident at Fayette Mall: pic.twitter.com/frQMTyZJqK— #MaskUpCats (@universityofky) August 23, 2020 136

A suburban Chicago police officer responding Sunday to a shooting at a bar killed a security guard who was just "doing his job," an attorney for the victim's family said.An officer from Midlothian, a Chicago suburb, fatally shot Jemel Roberson, a 26-year-old security guard working at the bar, Cook County Sheriff's Office spokeswoman Sophia Ansari told CNN.Several law enforcement agencies responded to the shooting around 4 a.m. at Manny's Blue Room Lounge in Robbins, about 20 miles south of Chicago, Ansari said. Three people and an alleged shooter were injured, she added.Then, after Roberson had apprehended an alleged gunman, the Midlothian officer shot Roberson outside the bar, according to a federal lawsuit filed Monday that calls the fatal shooting "excessive and unreasonable" and claims it violated Roberson's civil rights.Witnesses said security had asked several drunk men to leave the bar, and at least one person returned to the bar and opened fire, CNN affiliate WGN reported. A bartender was among the victims of that shooting, according to the lawsuit.After the shooting, Roberson "had somebody on the ground ... with his knee in back, with his gun in his back like, 'Don't move,'" Adam Harris, a witness, told WGN."We all yelled. 'He's a security. He's a security,' and without ... giving any thought, they shot him," Harris told the station. "The vest said security as well, ... and they shot him in the side." 1441

A subject coughing in a cyclic incident. Top view of airborne droplet transmission with and without wearing a surgical mask. The top and bottom figures show the results at 4 s and 5 s, respectively. We consider a surgical mask that exhibits an initial efficiency of ～91%. The cover does not prevent the transport of the saliva droplets entirely away from the subject. Many droplets penetrate the mask shield and some saliva droplet disease-carrier particles can travel more than 1.2 m. For visualization, the droplets were scaled by a factor of 600 compared to their actual size. The environmental conditions are zero wind speed, ambient temperature 20 °C, pressure 1 atm, and relative humidity 50%. The mouth temperature is 34 °C, and the face skin temperature is 32 °C. 779

A self-driving vehicle operated by Waymo was involved in a crash in Chandler on Friday afternoon. Helicopter footage from Scripps station KNXV in Phoenix showed significant damage to the self-driving van, as well as a silver sedan, after the collision near Chandler Village Drive and Chandler Boulevard. Minor injuries were reported in the crash.Chandler police said the Waymo van was in autonomous mode with an occupant behind the wheel at the time of the crash, but was not the "violator vehicle."Police spokesman Seth Tyler said it is believed that this is the first Waymo collision in Chandler this year.RELATED: Waymo gives?360-degree?view of what it's like inside self-driving carsThis is the second known self-driving car crash in the Phoenix area in the past two months. An Uber self-driving vehicle hit and killed a?pedestrian in Tempe on March 19.After the March crash, Waymo CEO John Krafcik?said he was confident in his company's technology.In November 2017, Waymo?announced that self-driving cars would be tested in Chandler without someone in the driver's seat. Chandler police told KNXV that an operator was behind the wheel at the time of Friday's collision. KNXV has reached out to Waymo for a comment on the crash.Waymo is subsidiary of Google. The company was founded in 2009.  1359

A US Postal Service employee was found fatally shot inside a truck on Interstate 30, Dallas police said.The employee was found about 2:20 a.m. Monday in a USPS box truck on the Dallas-Fort Worth Turnpike Freeway, police said in a statement.Homicide detectives and US postal inspectors responded, but police did not indicate what might have happened. The victim has not been named yet.A photo from the scene shows the truck resting beside a guard rail.On February 8, a marked Dallas police squad car was shot at about one mile from Monday's incident. The officer was not injured,?CNN affiliate KTVT reported.Police said there is no evidence to link the two shootings. 674

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