The jet-setting Obamas arrived at their $50,000 per week Martha's Vineyard vacation destination yesterday on separate taxpayer provided jets.The extravagant travel choice flies in the face of Barack Obama's war on private jet owners and his call for "shared sacrifice" to ease the exploding federal budget deficit.Michelle Obama and the two Obama daughters took what appears to be a Gulfstream jet while the president and family dog Bo flew Air Force One to a nearby airfield and were then taken by helicopter to Martha's Vineyard, according to an account by the Martha's Vineyard Gazette and other reports. No reason was...