Ludwig Ring-Eifel (editor-in-chief of KNA, German bishops' agency), "Giani was a real tough guy. He could handle potentially dangerous madmen (and -women) as well as ordinary people longing for the pope’s touch. Will be hard for the #Vatican to find anyone like him for this extremely demanding job."
Vatican police commander Domenico Giani has resigned after suspension of 5 Vatican officials whose names were circulated internally, then published in the media. Vatican says Giani bears "no personal responsibility" for events but resigned for love of Church, faithfulness to Pope
He was responsible for the brutal dismissal in 2017 of the Vatican's Auditor General Libero Milone. Milone was dismissed because he was accused by Card. Becciu of spying on him (ie, investigating him as was the Auditor's job). A few days ago Cardinal Becciu was dismissed and he is under investigation for financial irregularities.