The United States Marines, Army, and Navy were featured at the expo, with exhibits, onsite tent cities, parades, band concerts, and live mock battles. Opening of the exposition At midnight (in San Diego) on December 31, 1914, President Woodrow Wilson ceremoniously pushed a telegraph button in Washington, D.C. to open the expo by turning on the power and lights at the park. In addition, a lit balloon located 1,500 feet above the park further brightened the exposition. Guns at the nearby Fort Rosecrans and on Navy ships in San Diego Bay also were fired to signal the opening. Admission for adults was $0.50 ($ today) and $0.25 ($ today) for children. Based on varying sources, the opening day's attendance was between 31,836 and 42,486. By the end of the first month, daily attendance decreased, with an average number of guests at 4,783 a day, which decreased to 4,360 by February. However, in April 1915 it was announced that the expo had already resulted in a $40,000 ($ today) profit for the first three months. By May, the average daily attendance had increased to 5,800 and in July the total attendance had reached a million visitors. Notable guests of the event include Vice President Thomas R. Marshall, Secretary of State William Jennings Bryan, Franklin D. Roosevelt, then Secretary of the Navy, former presidents William Howard Taft and Theodore Roosevelt, inventor Thomas Edison, and automobile businessman Henry Ford. The attempt to "put San Diego on the map" with national attention was successful. Even Pennsylvania's Liberty Bell made a brief three-day appearance in November 1915. At the end of 1915, total visitors reached over two million and the expo had turned a small profit of $56,570 ($ today). Extension Prior to the end of 1915, plans began circulating for extending the exposition for another year. Most of the board of directors, however, were not able to continue into the new year and resigned. Funding for the 1916 addition came from Los Angeles, local businessman, proceeds from the 1915 expo, leftover funding from the Panama–Pacific International Exposition, and chambers of commerce outside of San Diego. On March 18, 1916 Secretary of the Navy Josephus Daniels pushed a button in Washington, D.C. that sounded a gong in the Plaza de Panama to commemorate "Exposition Dedication Day". While originally opened as Panama–California Exposition, the fair was rechristened the Panama–California International Exposition. This was actually valid renaming,