This type of form may be used to temporarily increase a father's support to his children after a divorce when he has a temporary increase in income. This particular form uses the example of a national guardsman or reservist who has been deployed.
Note the acknowledgment.
?§ 89-3-5. Acknowledgments before commissioned officers of United States armed forces. In all cases where a conveyance, contract, agreement or other instrument of writing has heretofore been acknowledged or proved before any commissioned officer in the services of the United States armed forces, such acknowledgment or affidavit is hereby declared to be good, valid and binding to the same extent and with like effect as though such conveyance, contract, agreement, or other instrument of writing had been acknowledged or proved before any officer authorized by law to take acknowledgments in the State of Mississippi.