Division is all "they" know..
He was also put on a ventilator according to this article…
Officer Sicknick was rushed to a local hospital, where his family learned he had a blood clot on his brain and had been placed on a ventilator, his brother, Craig Sicknick, told the Daily Beast.
Officer Sicknick, a 12-and-one-half-year veteran of the department, served in the Air National Guard prior to joining the USCP in 2008, his brother told the Daily Beast.
He also served in Operation Enduring Freedom and Operation Desert Shield, his brother said.
Officer Sicknick was most recently assigned to the USCP First Responders Unit, the agency said in the press release.
https://policetribune.com/hero-down-u-s-capitol-police-officer-brian-sicknick-dies-after-attack-at-capitol-riot/