CREATE TABLE table_19634 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Record" TEXT, "Game Site" TEXT, "Attendance" FLOAT)

What was the site of the game against Buffalo Bills ?
SELECT "Game Site" FROM table_19634 WHERE "Opponent" = 'Buffalo Bills'
SELECT "Game Site" FROM "table_19634" WHERE "Opponent" = 'Buffalo Bills'