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Two students are injured — one of which is in critical condition — after a school shooting took place Tuesday at Great Mills High School in southern Maryland.The gunman died following the attack according to police officials.Jonathan Freese, a student at Great Mills, told CNN he was in lockdown in his math class. Police were going through classrooms to clear the school, and students will then be escorted out of the school, Freese said."I'm still a little shaken up," he said.Freese said the school had held drills a couple of times for this kind of situation."I didn't really expect for this to happen. I do always feel safe, though, because they always have police at the school," he said.According to CNN's research, there have been 16 confirmed school shootings this year in the United States prior to today.  Great Mills High School has an enrollment of just over 1,500 students, and the student body was about 56% minority students and had a four-year graduation rate of 91%, according to the school's 2015-16 improvement plan.Last week, students at Great Mills High School walked out of class as part of a student-led protest against school violence in the wake of the mass shooting at Marjory Stoneman Douglas High School in Parkland, Florida.Al Murray shot video of police responding to the shooting at the high school Tuesday. He says he saw at least one officer run into the building with a shotgun or rifle. 1440

UPDATE (Feb. 21, 6:10 a.m.): SpaceX officials say the Falcon 9 launch is pushed back to Feb. 22 at 6:17 a.m. Pacific time due to "strong upper level winds."SAN DIEGO (KGTV) - If you catch a ball of fire soaring through Southern California's sky Wednesday, there's a good chance it's SpaceX's latest launch - so please remain calm. 343

Two moderate members of the Republican party scoured President Donald Trump's continued attempts to challenge the result of the 2020 election on Thursday.After a day that saw Trump personally court state election officials in Michigan and a lengthy and wild press conference from his personal lawyer, Sens. Mitt Romney, R-Utah, and Ben Sasse, R-Nebraska, each issued statements criticizing the President's continued unsubstantiated claims of widespread voter fraud.Late Thursday evening, Romney released a statement on Twitter bashing Trump over reports that he personally called Republican canvassers in Michigan, who are attempting to overturn their own decisions to certify the election results in Wayne County encompasses Detroit."Having failed to make even a plausible cause of widespread fraud or conspiracy before any court of law, the President has now resorted to overt pressure on state and local officials to subvert the will of the people and overturn the election," Romney wrote. "It is difficult to imagine a worse, more undemocratic action by a sitting American President." 1096

UPDATE: SDSU officials decided Wednesday to keep students and staff out of the building due to complaints.SAN DIEGO (KGTV) -- Nearly two dozen students and staff at San Diego State University say a chemical odor in one of the buildings made them sick.The Professional Studies and Fine Arts building was undergoing construction when the complaints began in January and has been closed since March 13. Students and staff reported sore throats, headaches, even nosebleeds. The university says there were 22 incident reports.The school says Environmental Health and Safety has performed air quality tests regularly since January showing the vapor levels in the building were non-toxic. SDSU brought in Expert Joel Berman who explained to students and staff Wednesday the two items causing the odor were coal tar pitch and asphalt. He said they were never at impermissible levels and were never a health hazard, despite the complaints of the staff.Staff did not take that well, "I think a majority of people are feeling very upset because there's this sense that we're all being gas-lit and being told that our common experience is not real or valid," one woman said.The Air Quality Control District is investigating, filing a Notice of Violation to the school as well as the contractors hired by SDSU. The violation reads, "discharging from a source, quantities of air contaminants or other material which cause injury, detriment, nuisance or annoyance to any considerable number of persons. Specifically for the application of Tremco Tremfex to the San Diego State University Professional Studies and Fine Arts building roof, causing the release of coal tar pitch volatiles into the building."The initial construction was to install rooftop mechanical shafts. The initial patching of the roof around the new shafts was done improperly, according to SDSU administrators. The re-patching was what caused the odor.San Diego State is planning to hold forums on April 3 and April 8 to give updates about the building repair and address safety concerns.President of the university, Adela de la Torre, stated they learned a lot from the forum, and it struck a chord with her. She said the university will work to be more communicative with students and staff and no one will enter the PSFA building until it is safe.If you're a student experiencing these symptoms, the university directs you to visit the Health Services Building. Staff should notify their superiors, who then file a report. 2490

United Airlines is putting together strong measures when it comes to safe air travel during COVID-19.On Wednesday, the company announced that customers must wear masks while at the airport or they could risk being "banned from flying." Customers would only be banned while the mask requirement is in place."The most important thing any of us can do to slow the spread of the coronavirus is to simply wear a mask when we're around other people," said United's Chief Executive Officer, Scott Kirby in a news release. "A mask is about protecting the safety of others, and I'm proud of the aggressive and proactive steps United Airlines has taken to ensure people are wearing a face-covering in the airports where we operate and onboard the aircraft we fly."Since May 4, the airlines have required travelers on their planes to wear masks.Now, they must also wear a mask while at United's customer service counters and kiosks, United Club locations, gates, and baggage claim areas, the company said.The mandate goes into effect on Friday. 1041