Man Down simply means "emergency" often medical.  It is suppose to signal Correctional Officers and staff that someone is in need of urgent assistance. The "man down" call, when yelled by an inmate or a staff member, is often amplified by others within earshot to ensure a rapid response.  Thats the idea anyway.  In some institutions, it is simply ignored. This violates Constitutional Rights. The 8th Amendment to the U.S. Constitution which prohibits cruel and unusual punishment, and this includes deliberate indifference to a prisoners serious medical need. There is legal liability for failure to provide adequate medical care to an inmate, which can lead to civil rights lawsuits against the prison and its personnel. Delayed or denied treatment for a serious medical issue can result in unnecessary pain, worsening of the condition, or even death. Criminal charges can even be filed. This raised Ethical concerns with the prison staff. They all have a legal obligation to ensure inmates receive necessary medical treatment, as they cannot seek care on their own. 

Sally Port Cages are often used to secure Incarcerated Individuals during Prisoner transfers, preventing escapes, weapon control and various handling of deliveries.  This area is considered a "buffer zone" between the outside world and the prison. During an inmate interview I was given detailed information of what is exactly inside the cages. What i was told may come to a surprise to some, but to others, its just another day. Incarcerated Individuals are inside those cages anywhere from 1-9 hours a day. Inside blood, feces, urine and pepper spray residue occupy the space that your loved one is often in. Exposing them to bloodborne pathogens such as viruses, bacteria and other bodily fluids. Causing Hep B, Hepatitis C and HIV. The microorganisms are highly infectious. This is considered a "holding" cell for the time being until the Incarcerated person is processed. These cages are also used as "punishment". After 4 hours being in the cages, they are supposed to get authorization for additional time. Water and restroom opportunities are supposed to be given, but often are not.