It's a big day for Cincinnati's Catholic community: The new archbishop, Robert Casey, was formally installed.Bishops, priests and deacons from all over the country attended the ceremony Thursday afternoon. More than 1,000 guests filled Cathedral Basilica of St. Peter in Chains.Using a metaphor about a childhood swimming memory, Cincinnati's new Archbishop advised his flock Thursday to "take a deep breath".The installation of 57 year-old Robert Casey carried a special aura, a mix of splendor and sacred. There was a distinct ceremonial beauty to it.In the ornate and venerable Greek Revival St. Peter In Chains Cathedral, Casey was formally installed as Cincinnati's tenth Archbishop. The breath of air was his theme for the day as he related the story of learning to swim.Casey recalled how he couldn't get the hang of floating, how he sunk like a rock, and how he watched his younger brother quickly master the art and dive into the deep end. He eventually got the hang of it and encouraged Catholics to be confident about the challenges of deep water.The church is in the process of consolidation as a result of fewer priests. Mass attendance numbers have fallen in recent years.But Casey expressed optimism about the future in an interview with us the day before his installation.Reside in the present moment was his message."People will talk today about people leaving the church. The question I have is did they ever belong to the church? So often when we talk to our younger Catholics, forty and younger, we discover that they never truly felt truly welcome or at home. And so, it's less a work of bringing people back to the church and more of the work of bringing people into the church," Casey said.There was an impressive precision to Thursday's process and a relaxed welcoming as well.Casey stood on the front steps, returning applause from the crowd outside.Moments later, after the traditional knock at the door, he was presented with the keys.He wore a big smile at times as he displayed the Papal Bull, the Pope's document of his appointment.Then he walked to the Bishop's Chair. Archbishop Dennis Schnurr made that same walk fifteen years ago. On Thursday, he accompanied Casey there.The new Archbishop stuck with a swimming metaphor in his closing message."Take a deep breath," Casey intoned. "Together may we confidently make our way into deep water, discovering together how Christ can and will transform us, transform us from rocks that sink to living stones rising to our call."