I worked in emergency planning over a period of years and of 4 major incidents from phosgene gas escapes to critical storm damage affecting the motorway network. Was the Chairman of a Safety Camera partnership. Asked for and went out with traffic police on a number of issues. Worked on police accident data - with police from motorcycle cops to normal traffic guys. Went on late night community partnership evenings in the town centres. Was asked to give evidence (which might have resulted in my liability) in a police sergeants death on the local roads CID. Worked with (i.e. as observer) to drugs raids and evidence gathering as part of community reassurance in the worst areas. Went on normal patrols with WPC's. Attended facial recongition seminars as part of town centre crime initiative and took police officers to the system manufacturers to assess capability (something to do with the aftermath of explosives at the time). Worked (observer) on crowd control at football matches. Worked with senor active officers on emergency planning preparation on many occassions (timely then). Went to and investigated the police firearms function (my request) and talked to the police armourer. Suggested the sale rather than destruction of seized shotguns and firearms (to save money). Participated in service specific Best Value reviews. and so forth. Probably a bit more than your average police officer.
I have presented an accident data review to police regarding the poor recording of data - this to a force's entire traffic enforcement unit, some 40 officers with the Chief Con present, they were rude to the CC but not me. I even offered to buy them GPS devices to get a better and more effective fix on crash locations. Worked with the local commissioner. This is by no means all but I have seen constables to inspectors to CID to ACC, DCC and CC levels. Police canteens are very good and very cheap these days.
All of this, as well as my day job - some in my own time, some not.
I have had the perhaps unique favour of a police escort home after one major incident as a thank you for my input.
Does this satisfy your concern - probably not.