During the 12 days that he watched the court-martial proceedings, Thurgood Marshall began to formulate an appeal campaign, having noticed that none of the men's grievances had been aired in court. Directly after the court closed the case, Marshall sent a letter to Secretary Forrestal asking why only blacks were assigned the task of loading munitions, why they had not been trained for that task, why they were forced to compete for speed, why they were not given survivor's leaves, and why they had not been allowed to rise in rank. Forrestal replied weakly, saying that a predominance of black men were stationed at Port Chicago so of course they would be working there to load munitions. Forrestal pointed out that there was no discrimination because other naval weapons stations were manned by white crews loading munitions. The Navy Secretary said that the men had not been promoted because their time at Port Chicago had been a "trial period", and that they were not given 30-day leaves because he thought it best for men to get quickly back to duty to prevent them from building up mental and emotional barriers.