[quote="HonoraDominum, post:11, topic:297973"]
In the 2012 Ordo of the FSSP, there is a section called "The Rite To Be Observed in the Celebration of Mass and On Defects That May Occur in the Celebration of the Mass" (English translations of the Latin texts from the 1962 Missale Romanium) that explains multiple scenarios and their resolutions. I had never seen it before I read the ordo, so I found it fascinating.** I'm not sure if these are protocol for Ordinary Form priests, but I'm assuming that since they are in the ordo for the FSSP, they are the standard procedure for their apostolate.*Here's a breakdown of a few scenarios and the resolutions (reformatted from the text (*Section X - Defects occurring in the celebration of the rite itself)):
]If, while the priest is celebrating Mass, the church is violated before he has reached the Canon* - the Mass is to be discontinued.
]If after the Canon *- it is not to be discontinued.
]If there is fear of an attack by enemies, or of a flood or of the collapse of the building where the Mass is being celebrated *- the Mass is to be discontinued if it is before the Consecration; if this fear arises after the Consecration, however, the priest may omit everything else and go on at once to the reception of the Sacrament.
]If before the Consecration the priest becomes seriously ill, or faints, or dies* - the Mass is discontinued.
]If this happens after the consecration of the Body only and before the consecration of the Blood, or after both have been consecrated* - the Mass is to be completed by another priest from the place where the first priest stopped, and in case of necessity even by a priest who is not fasting.
]If the first priest has not died but has become ill and is still able to receive Communion, and there is no other consecrated host at hand* - the priest who is completing the Mass should divide the host, give one part to the sick priest and consume the other part himself.
]If the priest has died after half-saying the formula for the consecration of the Body* - there is no Consecration and no need for another priest to complete the Mass.
]If the priest has died after half- saying the formula for the consecration of the Blood* - another priest is to complete the Mass, repeating the whole formula over the same chalice from the words Simili modo, postquam cenatum est; or he may say the whole formula over another chalice which has been prepared, and consume the first priest's host and the Blood consecrated by himself, and then the chalice which was left half-consecrated.
The list goes on, but here's a few of the more interesting scenarios:
]If before the Consecration a fly or spider or anything else falls into the chalice *- the priest is to pour out the wine in a suitable place, put other wine into the chalice, add a little water, offer it, as above, and continue the Mass.
]If after the Consecration a fly or something of the kind falls into the chalice* - he is to take it out, wash it with wine, burn it after the Mass is over, and throw the ashes and the wine which was used for washing into the sacrarium.
]If the Blood freezes in the chalice in winter time* - the chalice should be wrapped in cloths that have been warmed. If this is not enough, it should be placed in boiling water near the altar until the Blood melts, but care should be taken that none of the water gets into the chalice.
I was just about to post something along that lines, because there was once an interesting thread on here about what a priest is to do if, after the consecration begins, a mass shooter walked in and attacked.
For all forms of the mass (as I am to understand), once consecration has begun the mass is not to be stopped. While parishoners may respond to an emergency, the priest is to finish the mass.
Incidently, we arrived at the conclusion that the priest should finish the mass while the parishoners should defend the sacrament (and I think that the term "return fire" was used at that point as well...). Of course, that was all hypothetical joking, but it DOES illustrate the grave importance of the mass, and particularly the Blessed Sacrament.