A relative of a missing passenger cries at a vigil in Beijing on April 8, 2014. Australian Defense Force divers scan the water for debris in the southern Indian Ocean on April 7, 2014. A towed pinger locator is readied to be deployed off the deck of the Australian vessel Ocean Shield on April 7, 2014.
From what I've learned in a similar search, I believe the DPO is the abbreviation for Discontinued Post Office. The AE definitely designates Army Europe and the 09498 part of your query would be the APO zip code for a former military installation.
The luteal phase is the third and final phase of the menstrual cycle, following ovulation. Also referred as as DPO (days past ovulation), its length is the number of days between ovulation up to the day before the start of your next period.