Former presidential rival and Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE surrogate Ben Carson was being interviewed in his neighborhood in Detroit when he suddenly remembered something.

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"We just saw Mr. Trump here and I asked him how did it go and he said 'Great.' He said he learned a lot of things. What do you think he took away from today?" CNN reporter Jeremy Diamond asked Carson.

Carson suddenly had a concerned look on his face.

"Oh my luggage. Um — hold on," Carson responded, before walking off.

Carson was in Detroit with the Republican presidential nominee as he marked his first appearance at a traditionally black church of his campaign. Trump spoke at the Great Faith Ministries church in Detroit, addressing the congregation to speak about his vow to continue the legacy of Abraham Lincoln and the Republican party and calling for a new "civil rights agenda for our time."

Carson spoke to the press following a brief tour of his childhood home and neighborhood.