There will always be people using drugs. Unfortunately, some will overdose; especially with the uncertainty of what they're actually getting, rising tolerance, and extremely addicting drugs.
However, law enforcement is generally the first to respond to medical emergencies. When law enforcement and family carry Narcan, a drug that can help reverse an opioid overdose, lives could be saved.
Ultimately, the implications of police, first responders and parents/family members carrying Narcan is that there are always people using drugs, especially due to the high risk of addiction with opiates. With police, first responders and parents/family members carrying Narcan, they have to ability to potentially save a life.