Australia has considered the MQ-4, both as a military platform and as customs enforcement platform; senior customs officials have doubted the effectiveness of the planned seven MQ-4C to detect small boats in the country's northern waters, especially through cloud cover. In 2013, Air Marshall Geoff Brown, head of the Royal Australian Air Force, stated that Australia was considering purchasing more manned P-8 Poseidon aircraft and reducing the number of MQ-4Cs planned to be bought for the RAAF. On 16 February 2014, it was reported that the Australian government would seek the purchase of seven MQ-4C Tritons; in addition to locating ships and aircraft, it would also be used to detect seaborne asylum seekers. Alongside the P-8, the MQ-4 is to replace the elderly P-3 Orion fleet.