Ask not what your country can do for you, ask what an airline can do for your country. In honor of National Military Appreciation Month, JetBlue Airlines is offering $1 fares for domestic travel to all active military personnel. But hurry, you'll have to book by tomorrow.

Proof of eligibility is required, and restrictions are plentiful, but then soldiers are used to that. This offer applies to departures from two airports, Washington Dulles International Airport in Dulles, Va., and Richmond International Airport in Richmond, Va.

Servicemembers must book on or before May 7 for travel between May 8 and May 31 from Dulles or Richmond to any JetBlue destination in the continental United States served nonstop from those airports.

Upon check-in, military travelers must present a valid Department of Defense common access card and official documentation at the JetBlue service counter verifying authorized leave from duty to show proof of active status. According to the press release, failure to present these documents will void the reservation. The fare is available to active-duty servicemembers only.

Unfortunately, retirees, reservists and military families are on their own.

An important detail: you can't book these fares online or at the service counter. To book the $1 fare, call 1-800-JETBLUE (538-2583) and select Option 4.

Servicemembers are responsible for applicable taxes and fees.

The airline also will donate $15,000 to the Wounded Warrior Project, a nonprofit organization that honors and empowers wounded soldiers.