MILWAUKEE — Donald Trump Jr. reflected on his father, Donald Trump, and his survival after an assassination attempt wounded his ear while lambasting President Joe Biden over growing concerns that his mental acuity is decreasing due to old age.

“What was my father’s reaction when his life was on the line? Not to cower, not to surrender, but to show for all the world to see that the next American president has the heart of a lion,” Trump Jr. said of the failed attempt on his father’s life on Saturday.