man , i know it 's for the best , but i do n't know if i 'm ready to join the air force . what is making you have second thoughts ? well , i just do n't know if i 'm physically fit enough for basic training . and it 's hard imagining signing a contract for 4 years . but , i know it 'll be better in the end , it 'll set me up with a good job and good work experience . there are other options in life but you must always follow your heart when making such important decisions .
Uncertainty about the commitment and physical demands of joining the Air Force.