Question: How many millions of viewers are listed where the writer is Matthew Okumura?
SQL: SELECT "U.S. viewers (million)" FROM "1-2866503-1" WHERE "Written by" = 'Matthew Okumura';

Question: What is the U.S air date when the title is "Calling"?
SQL: SELECT "U.S. air date" FROM "1-2866503-1" WHERE "Title" = '"Calling"';

Question: What is the U.S. air date when the U.S. viewers are 7.5 million?
SQL: SELECT "U.S. air date" FROM "1-2866503-1" WHERE "U.S. viewers (million)" = '7.5';