the thing is that YOUR opinion hasn't explained why having the sentries armed is more effective than having an armed "guardian angel" as it were. I'd be interested in hearing your thoughts on that. It has nothing to do with administration or risk it has everything to do with what is more effective.
look at this pic and tell me what's more effective and tell me how those sentries are safer with ammo and without an armed guardian. The fact is that they are not.
https://www.google.ca/search?q=guard+sentries&safe=active&biw=1680&bih=881&source=lnms&tbm=isch&sa=X&ei=RqYJVb3TDKnbsAT3wILwDQ&ved=0CAYQ_AUoAQ#safe=active&tbm=isch&q=guard+sentries+rideau+hall&imgdii=_&imgrc=p92xiH5elLr9sM%253A%3BhLYl4i9GQqrNuM%3Bhttp%253A%252F%252Fi.cbc.ca%252F1.2991645.1426157952!%252FcpImage%252FhttpImage%252Fimage.jpg_gen%252Fderivatives%252F16x9_620%252Fottawa-shooting-20141025.jpg%3Bhttp%253A%252F%252Fwww.cbc.ca%252Fnews%252Fcanada%252Fottawa%252Fnational-defence-should-pay-for-sentry-guards-ottawa-police-board-chair-1.2992697%3B620%3B349.
99% of the shenanigans that go on there and at rideau hall are tourists that get too close, or kids that try and touch the rifle. People are less likely to do it when a cop is there. I say this because i've experienced it, i've had people behind me beside me and I couldn't tell what was what unless it was far away and in my line of sight and i certainly had less awareness of what my sentry partner was experiencing. Commissionaires at RH were damned near useless. If teh House Sgt was nearby he at least could intervene and sometimes teh mounties at the House would to. At the cenotaph, the guys in 3B would intercept most issues but even then that wasn't always something to discourage people (especially ex and current serving members who were/are the worst offenders)