From defusing bombs to dispelling myths: Meet Ronny Jackson, the White House doctor for 3 presidents who held an hour-long press conference on Trump's health

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Dr. Ronny Jackson has been a White House physician for three presidents.

All eyes turned to doctor and rear admiral Ronny Jackson as he gave his report on President Donald Trump's physical at a press conference on Tuesday, wearing a slick military suit displaying his various honors.

Jackson delivered his findings without the kind of fanfare and over-the-top bravado that Trump's personal doctor Harold N. Bornstein used when he said that Trump would be the "healthiest individual ever elected to the presidency" in 2015. But the Navy and Marines veteran still managed to raise some eyebrows with comments about Trump's "incredible genes."

Trump's measurements and overall good health that Jackson reported were called into question in the media and on Twitter, where celebrities and journalists alike claimed he had given a low-ball measurement of the president's weight, giving birth to the "Girther Movement" conspiracy. Others, like CNN's Dr. Sanjay Gupta, claimed the numbers Jackson reported indicated that Trump had heart disease.

But Jackson has served in the White House for 12 years - personally caring for three presidents - and many former White House officials have lined up to defend his credibility.

Here is a rundown of his impressive and varied career: