Publicly their superior has to state that there will be an in depth investigation, and the Officers will be dealt with.
But I think in few weeks, when all the dust has settled, I'm sure we'll learn that their back on duty with just a stern telling off, with no charges brought against them, and it was all just a miss-understanding (again !). 
What basis have you for making that assertion Matt?
I think the outcome will not be that detrimental to the Officers, due to the fact that no-one was injured or killed, and because it was damage to someone's property that can be repaired, that compensation will be offered to the owners of the property by the Force, and if the owners agree that someone else will be paying for the repairs, that the Force will in return ask for an agreement not to proceed with action against the Officers involved.
Sorry if I sound cynical, but I've heard too many reports like this in the News, yet very few Officers seam to be thrown out of the Force for stupid acts that could of got someone injured, yet if caused by members of the public would have ended up serving jail time, or suspended jail term :-/ .
Thanks for fleshing that out Matt

At one time that indeed was the preferred way of dealing with such matters. Not so much now.
The emasculation of the 'force' as a whole by a self-serving middle/upper management structure more interested in holding onto their own post and advancing further up the scale towards greater reward and an enhanced pension package, has ensured that the first order of business now is to cover one's arse.
The politicisation of the senior echelons of the service by government (the last one in particular) has ensured that many managers have become reluctant to isolate themselves by making decisions which fall outside the safety of the committee decision making process.
The net result of this is that few in the management line now stand by those they command.
Modern policing is more about budget control, accumulation of data, development of trendy ideas, greater cooperation with foreign enforcement agencies, enforcement by proxy through a civilianised structure and electronic aids and the solidification of one's position in the overall management structure and less about providing a professional well motivated force of officers whose job it is to apprehend wrongdoers on the streets of this country.
For these reasons, and the fact that I have now given 39 years service to this nation in one capacity or another, I can say that there are more officers dismissed, required to resign, demoted, transferred, fined and blocked from further advancement within the force structure than you would imagine.