Donald Trump is hosting a celebration for four veterans of World War II where he found time to mention the importance of good genes.

After Trump addressed the Veterans of Foreign Wars convention last year, he welcomed 95-year-old Allen Jones to the stage.

The White House says Jones asked to spend his birthday Thursday with the president and Trump agreed. The three other veterans attending the Oval Office celebration are 100, 101 and 103.

Their ages led Trump to remark that he’s a “big believer in having good genes.” Trump turns 73 in June.

One veteran – a medic during the war – recently embarked on a tour to visit all 50 states and the White House to educate Americans about the “Greatest Generation,” the term used to describe those who fought during World War II.

WATCH:

Trump: "I'm a big believer in having good genes" https://t.co/QeLtpM4U72 pic.twitter.com/ibYl4GrxML

— Deena Zeina Zaru ????????‍???? (@Deena_Zaru) April 11, 2019

Twitter had some thoughts:

All the men and women with good genes served our country with pride and valor. Those with bad genes had bone spurs and couldn’t serve.

— Greg Jackson Realtor (@renegadegreg83) April 11, 2019

“I am also a big believer in doing everything possible to avoid going into the armed services “ #CadetBoneSpurs

— JMSH (@jmsh44) April 11, 2019

That, and evading military service, can lead to good health and a long life.

— kentrik, inc. (@kentrikinc) April 11, 2019

I forgot where his dad served in WWII, oh yeah he was too busy attending klan meetings

— wazzucoug99 (@wazzucoug99) April 11, 2019

Ahem pic.twitter.com/KaCkkXRy5L

— Rational Emergency (@the_usual_guff) April 11, 2019

One of the reasons for WWII was a certain country's irrational belief in "good genes"…

— Daniel Kelly (@dkellyChi) April 11, 2019

'Also, avoiding combat by any means necessary'

— Donna (@daffi515) April 11, 2019

We beat the guys who obsessed about "genes".

— Egon the Mad Usher (@MadUsher1928) April 11, 2019