Answer:
Increasing the space mission efforts
Explanation:
United States President John F. Kennedy's Rice Stadium Moon speech (September 12, 1962) was exclusively to persuade the American people to support the the efforts of space mission, and to land a man on the moon.
During the visit John Glen (who had already orbited the earth on February 20, 1962) was was also with the President, hence, the speech was certainly not about launching John Glen in the Atlas.
