What happens to Yankees' Aaron Boone's pacemaker when he goes ballistic on an umpire?
Boone takes leave for pacemaker; Lester to have surgery
Yankees manager Aaron Boone takes leave of absence for heart procedure - Los Angeles Times
Yankees manager Aaron boon receives pacemaker, takes leave of absence
Aaron Boone to receive pacemaker, expects to return to Yankees within days – Hartford Courant
Yankees manager Aaron Boone taking medical leave of absence after receiving pacemaker - CBS News
Boone gets pacemaker, takes leave from Yanks
Aaron Boone's Continuing Heart Issues Have Forced Him to Leave the New York Yankees
Yankees' Aaron Boone to have pacemaker installed
Yankee players react to news of Aaron Boone's heart surgery
Spring Training roundup: Aaron Boone takes leave for pacemaker; Jon Lester to have surgery
Yankees manager Aaron Boone takes leave to receive pacemaker - NBC Sports
Manager Aaron Boone set to Rejoin Yankees after Pacemaker Surgery