Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Game | Date | Opponent | Result | Black Knights points | Opponents | Record |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Sept. 20 | New Mexico | Win | 31.0 | 14.0 | 1-0-0 |
| 2.0 | Sept. 27 | @ Vanderbilt | Win | 16.0 | 6.0 | 2-0-0 |
| 3.0 | Oct. 4 | Texas A&M | Loss | 13.0 | 20.0 | 2-1-0 |
| 4.0 | Oct. 11 | Notre Dame | Loss | 0.0 | 45.0 | 2-2-0 |
| 5.0 | Oct. 18 | Utah State | Loss | 7.0 | 23.0 | 2-3-0 |
| 6.0 | Oct. 25 | Boston College | Win | 38.0 | 7.0 | 3-3-0 |
| 7.0 | Nov. 1 | Air Force | Loss | 6.0 | 13.0 | 3-4-0 |
| 8.0 | Nov. 8 | @ Oregon | Tie | 17.0 | 17.0 | 3-4-1 |
| 9.0 | Nov. 15 | @ Pittsburgh | Loss | 6.0 | 15.0 | 3-5-1 |
Question:
How many games have Air Force as the opponent?
Answer:
7.0