President-elect Barack Obama helps paint a wall at Sasha Bruce Youthwork, a youth shelter. (Source: Getty Images) President-elect Barack Obama did his part. And so did thousands of other Americans on today, the National Day of Service in honor of Dr. Martin Luther King Jr. Accompanied by Martin Luther King III, Obama went to the Sasha Bruce Youthwork, a shelter for homeless, runaway, and troubled youth to help spruce up the place. Just one day before he will be sworn in as the 44th president of the U.S., Obama also went to Walter Reed Army Medical Center to visit wounded troops wounded in the wars in Iraq and Afghanistan. The stately Sasha Bruce House on a hill was filled with volunteers, painting and preparing dormitories for girls and boys. Obama slipped through the back door and was greeted by the house's director and founder, Deborah Shore. Now wearing a casual Navy jacket and dark gray jeans, instead of the suit he wore to meet with the troops, Obama was greeted with shouts of "Mr. Obama!†"Give me a second,†he said. He made his way through one room where volunteers were painting lockers for the kids, then made his way up to the boys' dormitory. He looked at a mural. "I like that,†he commented, asking the names of volunteers and shaking hands. He then stooped down to tie his shoes, shucked his jacket to reveal a checked shirt with rolled up sleeves, then went to work. "Now, you want to make sure I do something simple, ‘cause I could screw something up,†he cautioned, saying he would not do electrical assignments. First, he tried to take down a weathered blue valance, calling for a hammer or a screw driver. Instead, he steadied a ladder while another volunteer pried the balking valance loose. Obama was more successful with the next valance. "Alright, that was pretty easy,†he offered. He then moved into his lane, painting, which he informed us, was a job he had his 17-year-old summer, earning minimum wage, which he ventured was $4 an hour. Picking up a long roller doused in "Laguna Blue†from nearby Frager's Hardware, he said, "That's a good stroke there. That's a good stroke there. Whadaya think?†amid shouts of approval. He then quoted Dr. Martin Luther King: "Everybody can be great because everybody can serve.†Talking to the volunteers, he could be overheard saying, "Kids get to work. They learn how to work. Nothing more important than that.†Moving on to another wall, he picked up a roller of Yosemite Blue. "I knocked out my section.†He turned to the press and cautioned, "After all this painting, don't be messing up.†He then joked, "This is good practice ‘cause I'm moving to a new house tomorrow.†Obama then said that together, "We can accomplish anything. One of the goals of my administration will be to make sure that we have a government that's more responsive and more effective and more efficient at helping families. But don't underestimate the power for people to pull together and to accomplish amazing things.†Speaking of more than 5,000 volunteer organizations getting involved in the National Day of Service, Obama said "the Internet is an amazing tool to organize people. We saw that in the campaign, but we don't want to use it just in elections. We want to use it to rebuild America.†Obama harnessed the power of the Internet during his campaign, connecting to millions via social networking sites. Moving back to a less serious mode, he said, "I do hope they're watching my technique.†He conceded "it's not rocket science. You take the pole and the roller, then you roll. But you do need to apply some elbow grease -— like everything we do.†He quoted Dr. King again, saying if you sweep floors for a living, make sure you are the best floor sweeper in the world. Unlike Obama, Martin Luther King III didn't bring work clothes and was still his suit. "When I heard the president-elect was changing his clothes, I knew I was in trouble,†King said. At the shelter, Obama ditched his jacket, rolled up his sleeves and helped with painting the walls a bright blue. Of his painting skills, Obama said: "I think I've got this wall covered," he said, according to the Associated Press. Meanwhile, Michelle Obama was in RFK Stadium volunteering with Operation Gratitude, an organization that assembles and sends packages to U.S. troops overseas. Later today the Obamas will have lunch with community service volunteers. This evening, Obama will participate in separate ceremonies to honor Gen. Colin L. Powell, Sen. John McCain, and Vice President-elect Joe Biden, men whose history of public service has been enhanced by bipartisan spirit.