Divine Liturgy VI: Go, you are sent.
Why do we call the Mass the Mass? Because "missa est". Now that we have received Eucharist, we are commanded to take Eucharist with us outside the walls, beyond the walls, to all and everywhere.
That command, "Ite, missa est" is clear enough in just plain translation, but it's even clearer when we remember that it was military jargon, a command roughly equivalent to the modern command "fall out". The military company comes together for morning roll call, receives the orders of the day, their duty assignments, and then they "fall out" to go do them. We, the members of the Body of Christ, have received the Body of Christ, and more deeply become the Body of Christ, our general orders to be holy; now there is a time where any "special orders of the day" can be presented --- the announcements. Then we are blessed for our further strengthening, and then we are sent, and we begin the adventure of being the Body of Christ outside the church walls, beyond the church realm, every place we are and in every situation we may be in, throughout the entire world.
The mission is ours; may we accept it and fulfill it with joy.