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President Barack Obama spoke about preserving national parks and the effects of climate change during a briefing Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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. Tyrell Price Jr., 9, shows an "Every Kid in a Park" card President Barack Obama gave him Saturday morning in Yosemite Valley.
Guy McCarthy / Union Democrat

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President Barack Obama speaks Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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President Barack Obama speaks Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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President Barack Obama speaks Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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Sebastian Brune, 7, of Alameda, and his father, Michael Brune, executive director of the Sierra Club, watch the presentation of the colors by the Yosemite Mounted Color Guard Saturday before President Obama's speech at Sentinel Bridge.
Maggie Beck / Union Democrat

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President Barack Obama speaks Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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Secret Service agents use binoculars to survey the area around Sentinel Bridge during President Barack Obama's appearance Saturday.
Maggie Beck / Union Democrat

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President Barack Obama shakes hands with members of the crowd after speaking Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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The Yosemite Mounted Color Guard presents the colors before President Barack Obama's speech Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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President Barack Obama speaks Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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President Barack Obama speaks Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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Yosemite National Park was teeming with Secret Service agents Saturday while President Barack Obama and the First Family visit.
Maggie Beck / Union Democrat

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Madera County District 5 supervisor Tom Wheeler (left) photographs Tom Bopp, of Fish Camp, as he plays the piano while waiting for President Obama to arrive.
Maggie Beck / Union Democrat

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Stanislaus National Forest Supervisor Jeanne Higgins takes pictures before the President’s speech Saturday.
Maggie Beck / Union Democrat

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The Yosemite Mounted Color Guard presents the colors before President Barack Obama's speech Saturday at Yosemite National Park's Sentinel Bridge.
Maggie Beck / Union Democrat

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