Cressman states that Shima 's force was sighted by Australia - based US Army aircraft from Darwin , Glencurry , and Townsville ( Cressman , p. 84 ) .
Lundstrom says that the sighting was most likely by a coastwatcher in the Solomons .
Cressman states that Shima 's force was sighted by Australia - based US Army aircraft from Darwin , Glencurry , and Townsville ( Cressman , p. 84 ) , but Lundstrom says that the sighting was most likely by a coastwatcher in the Solomons .